ID

VAR-200806-0575

CVE

CVE-2008-0960

TITLE

SNMPv3 improper HMAC validation allows authentication bypass

DESCRIPTION

SNMPv3 HMAC verification in (1) Net-SNMP 5.2.x before 5.2.4.1, 5.3.x before 5.3.2.1, and 5.4.x before 5.4.1.1; (2) UCD-SNMP; (3) eCos; (4) Juniper Session and Resource Control (SRC) C-series 1.0.0 through 2.0.0; (5) NetApp (aka Network Appliance) Data ONTAP 7.3RC1 and 7.3RC2; (6) SNMP Research before 16.2; (7) multiple Cisco IOS, CatOS, ACE, and Nexus products; (8) Ingate Firewall 3.1.0 and later and SIParator 3.1.0 and later; (9) HP OpenView SNMP Emanate Master Agent 15.x; and possibly other products relies on the client to specify the HMAC length, which makes it easier for remote attackers to bypass SNMP authentication via a length value of 1, which only checks the first byte. A vulnerability in the way implementations of SNMPv3 handle specially crafted packets may allow authentication bypass. Net-SNMP is prone to a remote authentication-bypass vulnerability caused by a design error. Successfully exploiting this issue will allow attackers to gain unauthorized access to the affected application. Net-SNMP 5.4.1, 5.3.2, 5.2.4, and prior versions are vulnerable. Net-SNMP is a set of open source Simple Network Management Protocol (Simple Network Management Protocol) software. The software is used to monitor network equipment, computer equipment, UPS equipment, etc. SNMPv3 authentication is implemented using HMAC. An attacker could exploit this vulnerability to read and modify any SNMP object accessible using the authenticated credentials logged into the system. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: SNMP Version 3 Authentication Vulnerabilities Document ID: 107408 Advisory ID: cisco-sa-20080610-snmpv3 http://www.cisco.com/warp/public/707/cisco-sa-20080610-snmpv3.shtml Revision 1.0 For Public Release 2008 June 10 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= Multiple Cisco products contain either of two authentication vulnerabilities in the Simple Network Management Protocol version 3 (SNMPv3) feature. These vulnerabilities can be exploited when processing a malformed SNMPv3 message. These vulnerabilities could allow the disclosure of network information or may enable an attacker to perform configuration changes to vulnerable devices. The SNMP server is an optional service that is disabled by default in Cisco products. Only SNMPv3 is impacted by these vulnerabilities. Workarounds are available for mitigating the impact of the vulnerabilities described in this document. The United States Computer Emergency Response Team (US-CERT) has assigned Vulnerability Note VU#878044 to these vulnerabilities. Common Vulnerabilities and Exposures (CVE) identifier CVE-2008-0960 has also been assigned to these vulnerabilities. This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20080610-snmpv3.shtml Affected Products ================= Vulnerable Products +------------------ The following Cisco products are vulnerable. * Cisco IOS * Cisco IOS-XR * Cisco Catalyst Operating System (CatOS) * Cisco NX-OS * Cisco Application Control Engine (ACE) Module * Cisco ACE Appliance * Cisco ACE XML Gateway * Cisco MDS 9000 Series Multilayer Fabric Switches Note: The SNMP server is disabled by default. These vulnerabilities only impact devices that are configured for SNMPv3. To determine the version of SNMP configured in Cisco IOS, CatOS and IOS-XR, log in to the device and issue the show snmp group command. The security model field indicates the version of SNMP configured. The output "usm" is the abbreviation for user-based security model and this indicates SNMPv3 is configured. Cisco IOS router#show snmp group groupname: test security model:v3 noauth readview : v1default writeview: <no writeview specified> notifyview: <no notifyview specified> row status: active Cisco CatOS 5500-1 (enable) show snmp group Security Model: v3 Security Name: userv3 Group Name: groupv3 Storage Type: nonvolatile Row Status: active Cisco IOS-XR RP/0/RP0/CPU0:ios#show snmp group groupname: test security model:usm readview : v1default writeview: - notifyview: v1default row status: nonVolatile IronPort +------- IronPort C-Series, X-Series, and M-Series appliances utilize code covered by this advisory, but are not susceptible to any security risk. IronPort C-Series, X-Series, and M-Series incorporate the libraries under the advisory to provide anonymous read-only access to system health data. There is no risk of escalated authorization privileges allowing a 3rd party to make any configuration changes to the IronPort devices. IronPort S-Series and Encryption Appliances are not affected by this advisory. This announcement has also been posted on the IronPort Support Portal, available to IronPort customers: https://supportportal.ironport.com/irppcnctr/srvcd?u=http://secure-support.soma.ironport.com/announcement&sid=900016 Products Confirmed Not Vulnerable +-------------------------------- The following Cisco products are confirmed not vulnerable: * Cisco PIX Security Appliances * Cisco ASA Security Appliances * Cisco Firewall Services Module (FWSM) * Cisco Security Monitoring, Analysis, and Response System (MARS) * Cisco Network Admission Control (NAC) Appliance * CiscoWorks Wireless LAN Solution Engine (WLSE) No other Cisco products are currently known to be affected by these vulnerabilities. Details ======= SNMP defines a standard mechanism for remote management and monitoring of devices in an Internet Protocol (IP) network. There are three general types of SNMP operations: "get" requests to request information, "set" requests that modify the configuration of a remote device, and "trap" messages that provide a monitoring function. SNMP requests and traps are transported over User Datagram Protocol (UDP) and are received at the assigned destination port numbers 161 and 162, respectively. SNMPv3 provides secure access to devices by authenticating and encrypting packets over the network. RFC2574 defines the use of HMAC-MD5-96 and HMAC-SHA-96 as the possible authentication protocols for SNMPv3. Vulnerabilities have been identified in the authentication code of multiple SNMPv3 implementations. This advisory identifies two vulnerabilities that are almost identical. Both are specifically related to malformed SNMPv3 packets that manipulate the Hash Message Authentication Code (HMAC). The two vulnerabilities may impact both Secure Hashing Algorithm-1 (SHA-1) and Message-Digest Algorithm 5 (MD5). The vulnerabilities described in this document can be successfully exploited using spoofed SNMPv3 packets. These vulnerabilities are documented in the following Cisco Bug IDs: * CSCsf04754 - IOS SNMPv3 HMAC Authentication issue * CSCsf30109 - IOS-XR SNMPv3 HMAC Authentication issue * CSCsf29976 - CatOS SNMPv3 HMAC Authentication issue * CSCsq62662 - ACE XML Gw SNMPv3 HMAC Authentication issue * CSCsq60664 - ACE Appliance SNMPv3 HMAC Authentication issue * CSCsq60695 - ACE Module SNMPv3 HMAC Authentication issue * CSCsq60582 - Nexus SNMPv3 HMAC Authentication issue Note: Although multiple software defects are listed, this advisory only identifies two vulnerabilities. Because different Cisco products require their own fixes, additional Bug IDs have been assigned. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss CSCsf04754 - IOS SNMPv3 HMAC Authentication issue - ----------------------------------------------------- CVSS Base Score - 10 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 8.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed CSCsf30109 - IOS-XR SNMPv3 HMAC Authentication issue - -------------------------------------------------------- CVSS Base Score - 10 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 8.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed CSCsf29976 - CatOS SNMPv3 HMAC Authentication issue - ------------------------------------------------------- CVSS Base Score - 10 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 8.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed CSCsq62662 - ACE XML Gw SNMPv3 HMAC Authentication issue - ------------------------------------------------------------ CVSS Base Score - 9.3 Access Vector - Network Access Complexity - Medium Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 7.7 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed CSCsq60664 - ACE Appliance SNMPv3 HMAC Authentication issue - --------------------------------------------------------------- CVSS Base Score - 9.3 Access Vector - Network Access Complexity - Medium Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 8.4 Exploitability - Functional Remediation Level - Workaround Report Confidence - Confirmed CSCsq60695 - ACE Module SNMPv3 HMAC Authentication issue - ------------------------------------------------------------ CVSS Base Score - 9.3 Access Vector - Network Access Complexity - Medium Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 8.4 Exploitability - Functional Remediation Level - Workaround Report Confidence - Confirmed CSCsq60582 - Nexus SNMPv3 HMAC Authentication issue - ------------------------------------------------------- CVSS Base Score - 9.3 Access Vector - Network Access Complexity - Medium Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete CVSS Temporal Score - 8.4 Exploitability - Functional Remediation Level - Workaround Report Confidence - Confirmed Impact ====== Successful exploitation of these vulnerabilities could result in the disclosure of sensitive information on a device or allow an attacker to make configuration changes to a vulnerable device that is based on the SNMP configuration. Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table. +---------------------------------------+ | Affected | Affected | First | | Product | Release | Fixed | | | | Release | |-----------------+----------+----------| | | 6.x | 6.4(23) | | |----------+----------| | Cisco Catalyst | 7.x | 7.6(19) | |Operating |----------+----------| | System (CatOS) | 8.5.x | 8.5(7) | | |----------+----------| | | 8.6.x | 8.6(1) | +---------------------------------------+ Cisco IOS XR +----------- The following table lists fixed Cisco IOS XR software. +---------------------------------------------------+ | Cisco | | | | IOS XR | SMU ID | SMU Name | | Version | | | |---------+------------+----------------------------| | 3.2.2 | AA01681 | hfr-base-3.2.2.CSCsf30109 | |---------+------------+----------------------------| | 3.2.3 | AA01682 | hfr-base-3.2.3.CSCsf30109 | |---------+------------+----------------------------| | 3.2.4 | AA01683 | hfr-base-3.2.4.CSCsf30109 | |---------+------------+----------------------------| | 3.2.6 | AA01684 | hfr-base-3.2.6.CSCsf30109 | |---------+------------+----------------------------| | 3.3.0 | AA01685 | hfr-base-3.3.0.CSCsf30109 | |---------+------------+----------------------------| | 3.3.0 | AA01690 | c12k-base-3.3.0.CSCsf30109 | |---------+------------+----------------------------| | 3.3.1 | AA01686 | hfr-base-3.3.1.CSCsf30109 | |---------+------------+----------------------------| | 3.3.1 | AA01688 | c12k-base-3.3.1.CSCsf30109 | |---------+------------+----------------------------| | 3.3.2 | Not | Not vulnerable | | | vulnerable | | |---------+------------+----------------------------| | 3.4.x | Not | Not vulnerable | | | vulnerable | | +---------------------------------------------------+ Cisco NX-OS +---------- The following table lists fixed Cisco NX-OS software. +----------------------------------------+ | Affected | Affected | First Fixed | | Product | Release | Release | |-----------+-----------+----------------| | Cisco | | 4.0.(2) | | NX-OS | 4.0.(1)a | Available June | | | | 2008 | +----------------------------------------+ Cisco ACE Products +----------------- The following table lists fixed Cisco Application Control Engine (ACE) software. +---------------------------------------+ | Affected | Affected | First | | Product | Release | Fixed | | | | Release | |----------------+----------+-----------| | | 3.0(0)A1 | | | Cisco | (6.x) | | | Application | | A2(1.1) | | Control Engine | A2(1.0) | | | (ACE) Module | | | | | A2(1.0a) | | |----------------+----------+-----------| | | A1(7.0) | | | | | | | Cisco | A1(7.0a) | | | Application | | | | Control Engine | A1(7.0b) | A1(8.0a) | | (ACE) | | | | Appliance | A1(7.0c) | | | | | | | | A1(8.0) | | |----------------+----------+-----------| | Cisco | 4.x | | | Application | | 6.0.1 | | Control Engine | 5.x | Available | | (ACE) XML | | June 2008 | | Gateway | 6.0 | | +---------------------------------------+ Cisco MDS software +----------------- The following table lists fixed Cisco MDS Multilayer Switch software. +---------------------------------------+ | Affected | Affected | First Fixed | | Product | Release | Release | |-----------+-----------+---------------| | | 2.1 | | | Cisco MDS | | 3.4.1 | | 9000 | 3.0 | Available | | | | June 2008 | | | 3.2 | | +---------------------------------------+ Workarounds =========== The following workarounds have been identified for these vulnerabilities. Infrastructure Access Control Lists +---------------------------------- Although it is often difficult to block traffic that transits a network, it is possible to identify traffic that should never be allowed to target infrastructure devices and block that traffic at the border of networks. Infrastructure Access Control Lists (iACLs) are a network security best practice and should be considered as a long-term addition to good network security as well as a workaround for these specific vulnerabilities. The iACL example below should be included as part of the deployed infrastructure access-list which will protect all devices with IP addresses in the infrastructure IP address range: Note: UDP port 161 is applicable for all versions of SNMP. !--- Permit SNMP UDP 161 packets from !--- trusted hosts destined to infrastructure addresses. access-list 150 permit udp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 161 !--- Deny SNMP UDP 161 packets from all !--- other sources destined to infrastructure addresses. access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES MASK eq 161 !--- Permit/deny all other Layer 3 and Layer 4 traffic in accordance !--- with existing security policies and configurations !--- Permit all other traffic to transit the device. access-list 150 permit ip any anyinterface serial 2/0ip access-group 150 in The white paper entitled "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists. This white paper can be obtained at the following link: http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a00801a1a55.shtml Control Plane Policing +--------------------- Control Plane Policing (CoPP) can be used to block untrusted SNMP access to the device. Cisco IOS software releases 12.0S, 12.2SX, 12.2S, 12.3T, 12.4, and 12.4T support the CoPP feature. CoPP can be configured on a device to protect the management and control planes and minimize the risk and effectiveness of direct infrastructure attacks by explicitly permitting only authorized traffic that is sent to infrastructure devices in accordance with existing security policies and configurations. The following example, which uses 192.168.100.1 to represent a trusted host, can be adapted to your network. !--- Deny SNMP UDP traffic from trusted hosts to all IP addresses !--- configured on all interfaces of the affected device so that !--- it will be allowed by the CoPP feature access-list 111 deny udp host 192.168.100.1 any eq 161 !--- Permit all other SNMP UDP traffic sent to all IP addresses !--- configured on all interfaces of the affected device so that it !--- will be policed and dropped by the CoPP feature access-list 111 permit udp any any eq 161 !--- Permit (Police or Drop)/Deny (Allow) all other Layer3 and Layer4 !--- traffic in accordance with existing security policies and !--- configurations for traffic that is authorized to be sent !--- to infrastructure devices !--- Create a Class-Map for traffic to be policed by !--- the CoPP feature class-map match-all drop-snmpv3-class match access-group 111 !--- Create a Policy-Map that will be applied to the !--- Control-Plane of the device. policy-map drop-snmpv3-traffic class drop-snmpv3-class drop !--- Apply the Policy-Map to the !--- Control-Plane of the device control-plane service-policy input drop-snmpv3-traffic In the above CoPP example, the access control list entries (ACEs) that match the potential exploit packets with the "permit" action result in these packets being discarded by the policy-map "drop" function, while packets that match the "deny" action (not shown) are not affected by the policy-map drop function. Please note that the policy-map syntax is different in the 12.2S and 12.0S Cisco IOS trains: policy-map drop-snmpv3-traffic class drop-snmpv3-class police 32000 1500 1500 conform-action drop exceed-action drop Additional information on the configuration and use of the CoPP feature is available at the following links: http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6642/prod_white_paper0900aecd804fa16a.html and http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html Transit Access Control Lists +--------------------------- Filters that deny SNMP packets using UDP port 161 should be deployed throughout the network as part of a Transit Access Control List (tACL) policy for protection of traffic that enters the network at ingress access points. This policy should be configured to protect the network device where the filter is applied and other devices behind it. Filters for SNMP packets that use UDP port 161 should also be deployed in front of vulnerable network devices so that traffic is only allowed from trusted clients. Additional information about tACLs is available in "Transit Access Control Lists: Filtering at Your Edge:" http://www.cisco.com/en/US/tech/tk648/tk361/technologies_white_paper09186a00801afc76.shtml Hardening Guide Statement +------------------------ Customers are advised to review the "Fortifying the Simple Network Management Protocol" section of the "Cisco Guide to Harden Cisco IOS Devices" for information on configuring an IOS device for SNMPv3 authentication and privacy: http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080120f48.shtml#fortify Cisco IOS authPriv Configuration +------------------------------- Enabling the SNMPv3 privacy subsystem (if it is not already in use) is a short-term workaround for users who are unable to upgrade in a timely fashion. This subsystem is used to encrypt SNMPv3 traffic using a shared secret. In Cisco IOS, administrators can enable this workaround by using the authPriv SNMPv3 feature. Only Cisco IOS crypto images can run the authPriv feature. Note: Ensure that the management application supports SNMPv3 authPriv before implementing this feature. Applied Mitigation Bulletin +-------------------------- Additional mitigation techniques that can be deployed on Cisco devices within the network are available in the Cisco Applied Intelligence companion document for this advisory: http://www.cisco.com/warp/public/707/cisco-amb-20080610-SNMPv3.shtml Obtaining Fixed Software ======================== Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment. Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/products/prod_warranties_item09186a008088e31f.html or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml. Do not contact psirt@cisco.com or security-alert@cisco.com for software upgrades. Customers with Service Contracts +------------------------------- Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com. Customers using Third Party Support Organizations +------------------------------------------------ Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory. The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed. Customers without Service Contracts +---------------------------------- Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac@cisco.com Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC. Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== Cisco is releasing this combined Cisco IOS and non-IOS product advisory out of our normal bi-yearly IOS security advisory cycle due to public disclosure of these vulnerabilities. Cisco is not aware of any malicious exploitation of these vulnerabilities. These vulnerabilities were reported to Cisco by Dr. Tom Dunigan of the University of Tennessee and Net-SNMP in cooperation with the CERT Coordination Center. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at : http://www.cisco.com/warp/public/707/cisco-sa-20080610-snmpv3.shtml In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients. * cust-security-announce@cisco.com * first-teams@first.org * bugtraq@securityfocus.com * vulnwatch@vulnwatch.org * cisco@spot.colorado.edu * cisco-nsp@puck.nether.net * full-disclosure@lists.grok.org.uk * comp.dcom.sys.cisco@newsgate.cisco.com Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates. Revision History ================ +---------------------------------------+ | Revision | | Initial | | 1.0 | 2008-June-10 | public | | | | release | +---------------------------------------+ Cisco Security Procedures ========================= Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt. - --------------------------------------------------------------------- Updated: Jun 10, 2008 Document ID: 107408 - --------------------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) iD8DBQFITruJ86n/Gc8U/uARAiuNAJwIq42/p8CUh7Dc88nAn9a1pfhhqgCfWXjv 8bYhCD0EKNQ28koObq4S+vQ= =zOBL -----END PGP SIGNATURE----- . Summary Updated ESX packages for libxml2, ucd-snmp, libtiff. 2. Relevant releases ESX 3.0.3 without patch ESX303-200810503-SG ESX 3.0.2 without patch ESX-1006968 ESX 2.5.5 before Upgrade Patch 10 ESX 2.5.4 before Upgrade Patch 21 NOTE: Extended support (Security and Bug fixes) for ESX 3.0.2 ended on 2008-10-29. Extended support (Security and Bug fixes) for ESX 2.5.4 ended on 2008-10-08. Extended support for ESX 3.0.2 Update 1 ends on 2009-08-08. Users should plan to upgrade to ESX 3.0.3 and preferably to the newest release available. 3. Problem Description a. Updated ESX Service Console package libxml2 A denial of service flaw was found in the way libxml2 processes certain content. If an application that is linked against libxml2 processes malformed XML content, the XML content might cause the application to stop responding. The following table lists what action remediates the vulnerability (column 4) if a solution is available. VMware Product Running Replace with/ Product Version on Apply Patch ============= ======== ======= ================= VirtualCenter any Windows not affected hosted any any not affected ESXi 3.5 ESXi not affected ESX 3.5 ESX affected, patch pending ESX 3.0.3 ESX ESX303-200810503-SG ESX 3.0.2 ESX ESX-1006968 ESX 2.5.5 ESX ESX 2.5.5 upgrade patch 10 or later ESX 2.5.4 ESX ESX 2.5.4 upgrade patch 21 * hosted products are VMware Workstation, Player, ACE, Server, Fusion. b. An attacker could use this flaw to spoof an authenticated SNMPv3 packet. The following table lists what action remediates the vulnerability (column 4) if a solution is available. VMware Product Running Replace with/ Product Version on Apply Patch ============= ======== ======= ================= VirtualCenter any Windows not affected hosted any any not affected ESXi 3.5 ESXi not affected ESX 3.5 ESX not affected ESX 3.0.3 ESX not affected ESX 3.0.2 ESX not affected ESX 2.5.5 ESX ESX 2.5.5 upgrade patch 10 or later ESX 2.5.4 ESX ESX 2.5.4 upgrade patch 21 * hosted products are VMware Workstation, Player, ACE, Server, Fusion. c. Updated third party library libtiff Multiple uses of uninitialized values were discovered in libtiff's Lempel-Ziv-Welch (LZW) compression algorithm decoder. An attacker could create a carefully crafted LZW-encoded TIFF file that would cause an application linked with libtiff to crash or, possibly, execute arbitrary code. The following table lists what action remediates the vulnerability (column 4) if a solution is available. VMware Product Running Replace with/ Product Version on Apply Patch ============= ======== ======= ================= VirtualCenter any Windows not affected hosted any any not affected ESXi 3.5 ESXi not affected ESX 3.5 ESX not affected ESX 3.0.3 ESX not affected ESX 3.0.2 ESX not affected ESX 2.5.5 ESX ESX 2.5.5 upgrade patch 10 or later ESX 2.5.4 ESX ESX 2.5.4 upgrade patch 21 * hosted products are VMware Workstation, Player, ACE, Server, Fusion. 4. Solution Please review the patch/release notes for your product and version and verify the md5sum of your downloaded file. ESX --- ESX 3.0.3 patch ESX303-200810503-SG http://download3.vmware.com/software/vi/ESX303-200810503-SG.zip md5sum: e687313e58377be41f6e6b767dfbf268 http://kb.vmware.com/kb/1006971 ESX 3.0.2 patch ESX-1006968 http://download3.vmware.com/software/vi/ESX-1006968.tgz md5sum: fc9e30cff6f03a209e6a275254fa6719 http://kb.vmware.com/kb/1006968 VMware ESX 2.5.5 Upgrade Patch 10 http://download3.vmware.com/software/esx/esx-2.5.5-119702-upgrade.tar.gz md5sum: 2ee87cdd70b1ba84751e24c0bd8b4621 http://vmware.com/support/esx25/doc/esx-255-200810-patch.html VMware ESX 2.5.4 Upgrade Patch 21 http://download3.vmware.com/software/esx/esx-2.5.4-119703-upgrade.tar.gz md5sum: d791be525c604c852a03dd7df0eabf35 http://vmware.com/support/esx25/doc/esx-254-200810-patch.html 5. References CVE numbers http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3281 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0960 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2327 - ------------------------------------------------------------------------ 6. Change log 2008-10-31 VMSA-2008-0017 Initial security advisory after release of ESX 3.0.3, ESX 3.0.2, ESX 2.5.5 and ESX 2.5.4 patches on 2008-10-30. - ----------------------------------------------------------------------- 7. Contact E-mail list for product security notifications and announcements: http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce This Security Advisory is posted to the following lists: * security-announce at lists.vmware.com * bugtraq at securityfocus.com * full-disclosure at lists.grok.org.uk E-mail: security at vmware.com PGP key at: http://kb.vmware.com/kb/1055 VMware Security Center http://www.vmware.com/security VMware security response policy http://www.vmware.com/support/policies/security_response.html General support life cycle policy http://www.vmware.com/support/policies/eos.html VMware Infrastructure support life cycle policy http://www.vmware.com/support/policies/eos_vi.html Copyright 2008 VMware Inc. All rights reserved. The authentication code reads the length to be checked from sender input, this allows the sender to supply single byte HMAC code and have a 1 in 256 chance of matching the correct HMAC and authenticating, as only the first byte will be checked. The sender would need to know a valid username. Currently Net-SNMP and UCD-SNMP are known to be vulnerable, other SNMP implementations may also be affected. The eCos project includes code derived from UCD-SNMP and is therefore also affected. Affected version: Net-SNMP <= 5.4.1, <= 5.3.2, <= 5.2.4 UCD-SNMP, all versions eCos, all versions Fixed version: Net-SNMP >= 5.4.1.1, >= 5.3.2.1, >= 5.2.4.1 UCD-SNMP, N/A eCos, N/A Credit: this issue was reported by CERT/CC, it is tracked as VU#878044. CVE: CVE-2008-0960 Timeline: 2008-06-05: CERT/CC reports VU#878044 to oCERT requesting joint coordination 2008-06-05: contacted affected vendors 2008-06-06: added eCos to affected packages 2008-06-09: patched net-snmp packages released 2008-06-09: advisory release References: http://sourceforge.net/forum/forum.php?forum_id=833770 http://sourceforge.net/tracker/index.php?func=detail&aid=1989089&group_id=12694&atid=456380 http://www.kb.cert.org/vuls/id/878044 Links: http://www.net-snmp.org http://www.ece.ucdavis.edu/ucd-snmp http://ecos.sourceware.org Permalink: http://www.ocert.org/advisories/ocert-2008-006.html -- Andrea Barisani | Founder & Project Coordinator oCERT | Open Source Computer Emergency Response Team <lcars@ocert.org> http://www.ocert.org 0x864C9B9E 0A76 074A 02CD E989 CE7F AC3F DA47 578E 864C 9B9E "Pluralitas non est ponenda sine necessitate" . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200808-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Net-SNMP: Multiple vulnerabilities Date: August 06, 2008 Bugs: #222265, #225105 ID: 200808-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities in Net-SNMP allow for authentication bypass in snmpd and execution of arbitrary code in Perl applications using Net-SMNP. Background ========== Net-SNMP is a collection of tools for generating and retrieving SNMP data. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-analyzer/net-snmp < 5.4.1.1 >= 5.4.1.1 Description =========== Wes Hardaker reported that the SNMPv3 HMAC verification relies on the client to specify the HMAC length (CVE-2008-0960). John Kortink reported a buffer overflow in the Perl bindings of Net-SNMP when processing the OCTETSTRING in an attribute value pair (AVP) received by an SNMP agent (CVE-2008-2292). Impact ====== An attacker could send SNMPv3 packets to an instance of snmpd providing a valid user name and an HMAC length value of 1, and easily conduct brute-force attacks to bypass SNMP authentication. An attacker could further entice a user to connect to a malicious SNMP agent with an SNMP client using the Perl bindings, possibly resulting in the execution of arbitrary code. Workaround ========== There is no known workaround at this time. Resolution ========== All Net-SNMP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-analyzer/net-snmp-5.4.1.1" References ========== [ 1 ] CVE-2008-0960 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0960 [ 2 ] CVE-2008-2292 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2292 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200808-02.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. License ======= Copyright 2008 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 . CVE-2008-4309 It was reported that an integer overflow in the netsnmp_create_subtree_cache function in agent/snmp_agent.c allows remote attackers to cause a denial of service attack via a crafted SNMP GETBULK request. For the stable distribution (etch), these problems has been fixed in version 5.2.3-7etch4. For the testing distribution (lenny) and unstable distribution (sid) these problems have been fixed in version 5.4.1~dfsg-11. We recommend that you upgrade your net-snmp package. Upgrade instructions - -------------------- wget url will fetch the file for you dpkg -i file.deb will install the referenced file. If you are using the apt-get package manager, use the line for sources.list as given below: apt-get update will update the internal database apt-get upgrade will install corrected packages You may use an automated update by adding the resources from the footer to the proper configuration. Debian GNU/Linux 4.0 alias etch - ------------------------------- Source archives: http://security.debian.org/pool/updates/main/n/net-snmp/net-snmp_5.2.3-7etch4.diff.gz Size/MD5 checksum: 94030 2ccd6191c3212980956c30de392825ec http://security.debian.org/pool/updates/main/n/net-snmp/net-snmp_5.2.3-7etch4.dsc Size/MD5 checksum: 1046 8018cc23033178515298d5583a74f9ff http://security.debian.org/pool/updates/main/n/net-snmp/net-snmp_5.2.3.orig.tar.gz Size/MD5 checksum: 4006389 ba4bc583413f90618228d0f196da8181 Architecture independent packages: http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-base_5.2.3-7etch4_all.deb Size/MD5 checksum: 1214368 d579d8f28f3d704b6c09b2b480425086 http://security.debian.org/pool/updates/main/n/net-snmp/tkmib_5.2.3-7etch4_all.deb Size/MD5 checksum: 855594 b5ccd827adbcefcca3557fa9ae28cc08 alpha architecture (DEC Alpha) http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_alpha.deb Size/MD5 checksum: 2169470 265835564ef2b0e2e86a08000461c53b http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_alpha.deb Size/MD5 checksum: 944098 5b903886ee4740842715797e3231602c http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_alpha.deb Size/MD5 checksum: 1901802 5486eb1f2a5b076e5342b1dd9cbb12e2 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_alpha.deb Size/MD5 checksum: 933202 e3210ba1641079e0c3aaf4a50e89aedd http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_alpha.deb Size/MD5 checksum: 835584 b14db8c5e5b5e2d34799952975f903fb amd64 architecture (AMD x86_64 (AMD64)) http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_amd64.deb Size/MD5 checksum: 932008 fc79672bf64eaabd41ed1c2f4a42c7da http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_amd64.deb Size/MD5 checksum: 1890766 ae3832515a97a79b31e0e7f0316356ee http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_amd64.deb Size/MD5 checksum: 835088 62867e9ba9dfca3c7e8ae575d5a478f5 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_amd64.deb Size/MD5 checksum: 918844 d2d1bc5f555bc9dba153e2a9a964ffbf http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_amd64.deb Size/MD5 checksum: 1557924 5c2a33a015dd44708a9cc7602ca2525c arm architecture (ARM) http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_arm.deb Size/MD5 checksum: 909974 4c1cef835efc0b7ff3fea54a618eabee http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_arm.deb Size/MD5 checksum: 835284 3ac835d926481c9e0f589b578455ddee http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_arm.deb Size/MD5 checksum: 928252 b98e98b58c61be02e477185293427d5c http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_arm.deb Size/MD5 checksum: 1778292 b903adf3d1fa6e7a26f7cafb7bffdd6b http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_arm.deb Size/MD5 checksum: 1344158 78b6cf6b2974983e8e3670468da73cd1 hppa architecture (HP PA RISC) http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_hppa.deb Size/MD5 checksum: 835940 9eeaf116e386dd7733ab2106c662dfa9 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_hppa.deb Size/MD5 checksum: 1809132 78bb5f1c12b004d32fa265e6bd99ffa1 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_hppa.deb Size/MD5 checksum: 1926116 71c7f3095ffe1bb22e84ade21f32b3a4 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_hppa.deb Size/MD5 checksum: 935434 85deac8531b02a0fdf3c9baa21d8e4bd http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_hppa.deb Size/MD5 checksum: 935640 958cb158264f75772864cd5d5c0bf251 i386 architecture (Intel ia32) http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_i386.deb Size/MD5 checksum: 1423294 f05c7491a8100684c5085588738f05b5 http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_i386.deb Size/MD5 checksum: 833970 cb705c9fe9418cc9348ac935ea7b0ba2 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_i386.deb Size/MD5 checksum: 920070 3df41a0c99c41d1bccf6801011cf8ed5 http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_i386.deb Size/MD5 checksum: 925914 159b4244ef701edbe0fb8c9685b5b477 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_i386.deb Size/MD5 checksum: 1838900 3b7ac7b8fe0da1a3909ee56aba46d464 ia64 architecture (Intel ia64) http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_ia64.deb Size/MD5 checksum: 2205680 6868a56b1db04627e6921bf7237939a2 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_ia64.deb Size/MD5 checksum: 970440 783f0cccabfbcc63590730b3803d164d http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_ia64.deb Size/MD5 checksum: 2281114 fd04b505755a3aed0fe4c9baaac84500 http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_ia64.deb Size/MD5 checksum: 842690 9f9ca89c3d3ba7c46481e9cd39c242a6 http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_ia64.deb Size/MD5 checksum: 962854 c8a32f808d719357a5b6350e2b60794e mips architecture (MIPS (Big Endian)) http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_mips.deb Size/MD5 checksum: 895414 5dd919d188291cb3727d39b5e06c9e26 http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_mips.deb Size/MD5 checksum: 927342 28c245db4d8ea82ba4075b27d674d72a http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_mips.deb Size/MD5 checksum: 833182 0e0b21e13d77de82bed7a38d30f65e4b http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_mips.deb Size/MD5 checksum: 1769524 24bdc73a3d20c4046c7741957442c713 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_mips.deb Size/MD5 checksum: 1717562 977ae5c34a127d32d8f2bf222de9a431 mipsel architecture (MIPS (Little Endian)) http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_mipsel.deb Size/MD5 checksum: 1755032 cab5c112911465a9ce23a0d2ea44ded9 http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_mipsel.deb Size/MD5 checksum: 926616 2bf14a3fe74d9f2a523aacc8b04f5282 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_mipsel.deb Size/MD5 checksum: 895194 b7c9ed37bf83ad92371f5472ac5d917b http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_mipsel.deb Size/MD5 checksum: 833098 08b63ba6c3becf25ba2f941a532a7b71 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_mipsel.deb Size/MD5 checksum: 1720642 1ff7568eb478edee923edb76cf42e9ac powerpc architecture (PowerPC) http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_powerpc.deb Size/MD5 checksum: 941434 bbac9384bd7f88339e2b86fa665208c1 http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_powerpc.deb Size/MD5 checksum: 835212 4790d79f8de7f1bee7aabf0473f25268 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_powerpc.deb Size/MD5 checksum: 1657890 b91fcf52e80c7196cea0c13df9ac79ef http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_powerpc.deb Size/MD5 checksum: 1803262 4d298c9509941390c7b2eb68320ad211 http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_powerpc.deb Size/MD5 checksum: 928170 b17966a6a61313344ac827b58f32eeef s390 architecture (IBM S/390) http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_s390.deb Size/MD5 checksum: 1409718 2a128cbdce2522ef49604255cff41af2 http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_s390.deb Size/MD5 checksum: 931452 d3bb7c3a849cd2b35fa6e4acb19c318d http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_s390.deb Size/MD5 checksum: 1834914 67e5b946df18b06b41b3e108d5ddc4e3 http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_s390.deb Size/MD5 checksum: 836102 7a4b85e8ea0e50d7213997b5f7d6309f http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_s390.deb Size/MD5 checksum: 903864 3f80e78e4e2672aacf3da0690ff24b79 sparc architecture (Sun SPARC/UltraSPARC) http://security.debian.org/pool/updates/main/n/net-snmp/snmp_5.2.3-7etch4_sparc.deb Size/MD5 checksum: 925336 5824ea607689f3f1bd62a9e6e28f95ae http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9-dev_5.2.3-7etch4_sparc.deb Size/MD5 checksum: 1548630 1378d1cf730d3026bc1f01a4ab2ccedb http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp-perl_5.2.3-7etch4_sparc.deb Size/MD5 checksum: 918592 28a086f6aa2ee8d510b38c1a177843fc http://security.debian.org/pool/updates/main/n/net-snmp/snmpd_5.2.3-7etch4_sparc.deb Size/MD5 checksum: 834186 068cbf2b4774ecf9504b820db26e6f1d http://security.debian.org/pool/updates/main/n/net-snmp/libsnmp9_5.2.3-7etch4_sparc.deb Size/MD5 checksum: 1782014 d39fae5fe0d1397a2a1bd7397d6e850a These files will probably be moved into the stable distribution on its next update. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: net-snmp Announcement ID: SUSE-SA:2008:039 Date: Fri, 01 Aug 2008 13:00:00 +0000 Affected Products: openSUSE 10.2 openSUSE 10.3 openSUSE 11.0 SUSE SLES 9 Novell Linux Desktop 9 Open Enterprise Server Novell Linux POS 9 SUSE Linux Enterprise Desktop 10 SP1 SLE SDK 10 SP1 SLE SDK 10 SP2 SUSE Linux Enterprise Server 10 SP1 SUSE Linux Enterprise Desktop 10 SP2 SUSE Linux Enterprise Server 10 SP2 Vulnerability Type: authentication bypass, denial-of-service Severity (1-10): 6 SUSE Default Package: no Cross-References: CVE-2008-0960 CVE-2008-2292 Content of This Advisory: 1) Security Vulnerability Resolved: - authentication bypass - denial-of-service Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: - viewvc/subversion 6) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion The net-snmp daemon implements the "simple network management protocol". The version 3 of SNMP as implemented in net-snmp uses the length of the HMAC in a packet to verify against a local HMAC for authentication. An attacker can therefore send a SNMPv3 packet with a one byte HMAC and guess the correct first byte of the local HMAC with 256 packets (max). Additionally a buffer overflow in perl-snmp was fixed that can cause a denial-of-service/crash. 2) Solution or Work-Around Please install the update package. 3) Special Instructions and Notes Please restart net-snmp after the update. 4) Package Location and Checksums The preferred method for installing security updates is to use the YaST Online Update (YOU) tool. YOU detects which updates are required and automatically performs the necessary steps to verify and install them. Alternatively, download the update packages for your distribution manually and verify their integrity by the methods listed in Section 6 of this announcement. Then install the packages using the command rpm -Fhv <file.rpm> to apply the update, replacing <file.rpm> with the filename of the downloaded RPM package. x86 Platform: openSUSE 11.0: http://download.opensuse.org/pub/opensuse/update/11.0/rpm/i586/libsnmp15-5.4.1-77.2.i586.rpm http://download.opensuse.org/pub/opensuse/update/11.0/rpm/i586/net-snmp-5.4.1-77.2.i586.rpm http://download.opensuse.org/pub/opensuse/update/11.0/rpm/i586/net-snmp-devel-5.4.1-77.2.i586.rpm http://download.opensuse.org/pub/opensuse/update/11.0/rpm/i586/perl-SNMP-5.4.1-77.2.i586.rpm http://download.opensuse.org/pub/opensuse/update/11.0/rpm/i586/snmp-mibs-5.4.1-77.2.i586.rpm openSUSE 10.3: http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/libsnmp15-5.4.1-19.2.i586.rpm http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/net-snmp-5.4.1-19.2.i586.rpm http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/net-snmp-devel-5.4.1-19.2.i586.rpm http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/perl-SNMP-5.4.1-19.2.i586.rpm http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/snmp-mibs-5.4.1-19.2.i586.rpm openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/net-snmp-5.4.rc2-8.i586.rpm ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/net-snmp-devel-5.4.rc2-8.i586.rpm ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/perl-SNMP-5.4.rc2-8.i586.rpm x86-64 Platform: openSUSE 11.0: http://download.opensuse.org/pub/opensuse/update/11.0/rpm/x86_64/net-snmp-32bit-5.4.1-77.2.x86_64.rpm openSUSE 10.3: http://download.opensuse.org/pub/opensuse/update/10.3/rpm/x86_64/net-snmp-32bit-5.4.1-19.2.x86_64.rpm openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/net-snmp-32bit-5.4.rc2-8.x86_64.rpm Sources: openSUSE 11.0: http://download.opensuse.org/pub/opensuse/update/11.0/rpm/src/net-snmp-5.4.1-77.2.src.rpm openSUSE 10.3: http://download.opensuse.org/pub/opensuse/update/10.3/rpm/src/net-snmp-5.4.1-19.2.src.rpm openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/net-snmp-5.4.rc2-8.src.rpm Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: Open Enterprise Server http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 Novell Linux POS 9 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 Novell Linux Desktop 9 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 SUSE Linux Enterprise Server 10 SP1 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 SUSE Linux Enterprise Server 10 SP2 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 SLE SDK 10 SP2 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 SLE SDK 10 SP1 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 SUSE Linux Enterprise Desktop 10 SP1 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 SUSE Linux Enterprise Desktop 10 SP2 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 SUSE SLES 9 http://download.novell.com/index.jsp?search=Search&keywords=71093bdfd49361f6dbe32a8fde43b848 ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: - viewvc/subversion This update of subversion fixes multiple vulnerabilities. - CVE-2008-1290: list CVS or SVN commits on "all-forbidden" files - CVE-2008-1291: directly access hidden CVSROOT folders - CVE-2008-1292: expose restricted content via the revision view, the log history, or the diff view ______________________________________________________________________________ 6) Authenticity Verification and Additional Information - Announcement authenticity verification: SUSE security announcements are published via mailing lists and on Web sites. The authenticity and integrity of a SUSE security announcement is guaranteed by a cryptographic signature in each announcement. All SUSE security announcements are published with a valid signature. To verify the signature of the announcement, save it as text into a file and run the command gpg --verify <file> replacing <file> with the name of the file where you saved the announcement. The output for a valid signature looks like: gpg: Signature made <DATE> using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team <security@suse.de>" where <DATE> is replaced by the date the document was signed. If the security team's key is not contained in your key ring, you can import it from the first installation CD. To import the key, use the command gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc - Package authenticity verification: SUSE update packages are available on many mirror FTP servers all over the world. While this service is considered valuable and important to the free and open source software community, the authenticity and the integrity of a package needs to be verified to ensure that it has not been tampered with. The internal rpm package signatures provide an easy way to verify the authenticity of an RPM package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, replacing <file.rpm> with the filename of the RPM package downloaded. The package is unmodified if it contains a valid signature from build@suse.de with the key ID 9C800ACA. This key is automatically imported into the RPM database (on RPMv4-based distributions) and the gpg key ring of 'root' during installation. You can also find it on the first installation CD and at the end of this announcement. - SUSE runs two security mailing lists to which any interested party may subscribe: opensuse-security@opensuse.org - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to <opensuse-security+subscribe@opensuse.org>. opensuse-security-announce@opensuse.org - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an e-mail to <opensuse-security-announce+subscribe@opensuse.org>. The <security@suse.de> public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, the clear text signature should show proof of the authenticity of the text. SUSE Linux Products GmbH provides no warranties of any kind whatsoever with respect to the information contained in this security advisory. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/ . =========================================================== Ubuntu Security Notice USN-685-1 December 03, 2008 net-snmp vulnerabilities CVE-2008-0960, CVE-2008-2292, CVE-2008-4309 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 7.10 Ubuntu 8.04 LTS Ubuntu 8.10 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: libsnmp-perl 5.2.1.2-4ubuntu2.3 libsnmp9 5.2.1.2-4ubuntu2.3 Ubuntu 7.10: libsnmp-perl 5.3.1-6ubuntu2.2 libsnmp10 5.3.1-6ubuntu2.2 Ubuntu 8.04 LTS: libsnmp-perl 5.4.1~dfsg-4ubuntu4.2 libsnmp15 5.4.1~dfsg-4ubuntu4.2 Ubuntu 8.10: libsnmp15 5.4.1~dfsg-7.1ubuntu6.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Wes Hardaker discovered that the SNMP service did not correctly validate HMAC authentication requests. An unauthenticated remote attacker could send specially crafted SNMPv3 traffic with a valid username and gain access to the user's views without a valid authentication passphrase. (CVE-2008-0960) John Kortink discovered that the Net-SNMP Perl module did not correctly check the size of returned values. If a user or automated system were tricked into querying a malicious SNMP server, the application using the Perl module could be made to crash, leading to a denial of service. This did not affect Ubuntu 8.10. (CVE-2008-2292) It was discovered that the SNMP service did not correctly handle large GETBULK requests. (CVE-2008-4309) Updated packages for Ubuntu 6.06 LTS: Source archives: http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/net-snmp_5.2.1.2-4ubuntu2.3.diff.gz Size/MD5: 75402 9655d984a47cec8e27efa4db0b227870 http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/net-snmp_5.2.1.2-4ubuntu2.3.dsc Size/MD5: 838 17a17230a005c1acfd0569757e728fad http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/net-snmp_5.2.1.2.orig.tar.gz Size/MD5: 3869893 34159770a7fe418d99fdd416a75358b1 Architecture independent packages: http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp-base_5.2.1.2-4ubuntu2.3_all.deb Size/MD5: 1152306 f7647cee4df8db87ab48c0d05635a973 http://security.ubuntu.com/ubuntu/pool/universe/n/net-snmp/tkmib_5.2.1.2-4ubuntu2.3_all.deb Size/MD5: 822946 b9b852c188937d1fffc06d4da01325d5 amd64 architecture (Athlon64, Opteron, EM64T Xeon): http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp-perl_5.2.1.2-4ubuntu2.3_amd64.deb Size/MD5: 896620 a78012b3f0f13667081f97dc1a4d62e8 http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp9-dev_5.2.1.2-4ubuntu2.3_amd64.deb Size/MD5: 1497194 7d55b8d1e4ae0c45753bedcf536a1a5a http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp9_5.2.1.2-4ubuntu2.3_amd64.deb Size/MD5: 1826252 0550c1401f9bbe5f345fd96484ed369c http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/snmp_5.2.1.2-4ubuntu2.3_amd64.deb Size/MD5: 889330 5ad0ddb2c610973166e4dd07769ba3d3 http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/snmpd_5.2.1.2-4ubuntu2.3_amd64.deb Size/MD5: 797086 18cf4210342b683d3ee24fe995329b55 i386 architecture (x86 compatible Intel/AMD): http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp-perl_5.2.1.2-4ubuntu2.3_i386.deb Size/MD5: 896880 298d27ea1ece6e80bb8931b9a5e61961 http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp9-dev_5.2.1.2-4ubuntu2.3_i386.deb Size/MD5: 1268472 acbca43ab7ea747fa3e4636d15ef997c 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http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp-dev_5.3.1-6ubuntu2.2_sparc.deb Size/MD5: 2527568 19b1a0971259a9b99f9c0386f5935bfc http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp-perl_5.3.1-6ubuntu2.2_sparc.deb Size/MD5: 970264 d8ae7f0bb10375ad487b14ba031cd013 http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/libsnmp10_5.3.1-6ubuntu2.2_sparc.deb Size/MD5: 1078842 2401fc4c40352b8c8013e8c5de3b0ecd http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/snmp_5.3.1-6ubuntu2.2_sparc.deb Size/MD5: 995228 16b230d3c718d8eb4a023126bd09d7f5 http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/snmpd_5.3.1-6ubuntu2.2_sparc.deb Size/MD5: 908708 1e410a8ddac41ad9faec901c5a638f29 Updated packages for Ubuntu 8.04 LTS: Source archives: http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/net-snmp_5.4.1~dfsg-4ubuntu4.2.diff.gz Size/MD5: 78642 b4acf50e47be498e579b934f32081d25 http://security.ubuntu.com/ubuntu/pool/main/n/net-snmp/net-snmp_5.4.1~dfsg-4ubuntu4.2.dsc 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http://ports.ubuntu.com/pool/main/n/net-snmp/libsnmp-perl_5.4.1~dfsg-7.1ubuntu6.1_sparc.deb Size/MD5: 145164 2cdb5b35db853c7c184a44022fc23cd8 http://ports.ubuntu.com/pool/main/n/net-snmp/libsnmp15_5.4.1~dfsg-7.1ubuntu6.1_sparc.deb Size/MD5: 1159834 cfff424e5bff38bb3ef9419f03465388 http://ports.ubuntu.com/pool/main/n/net-snmp/snmp_5.4.1~dfsg-7.1ubuntu6.1_sparc.deb Size/MD5: 163042 354f7a5423a34c411c5f8620c66d3e58 http://ports.ubuntu.com/pool/main/n/net-snmp/snmpd_5.4.1~dfsg-7.1ubuntu6.1_sparc.deb Size/MD5: 76994 ca11bcf9a411f618e35e1d6b6ab8c8f9 http://ports.ubuntu.com/pool/universe/n/net-snmp/libsnmp-python_5.4.1~dfsg-7.1ubuntu6.1_sparc.deb Size/MD5: 38526 172493ec5df1866e2633e074c7f38775 . OpenSSL Binaries Updated This fix updates the third party OpenSSL library. net-snmp Security update This fix upgrades the service console rpm for net-snmp to version net-snmp-5.0.9-2.30E.24. perl Security update This fix upgrades the service console rpm for perl to version perl-5.8.0-98.EL3. ESX --- ESX 3.0.3 build 104629 ESX Server 3.0.3 CD image md5sum: c2cda9242c6981c7eba1004e8fc5626d Upgrade package from ESX Server 2.x to ESX Server 3.0.3 md5sum: 0ad8fa4707915139d8b2343afebeb92b Upgrade package from earlier releases of ESX Server 3 to ESX Server 3.0.3 md5sum: ff7f3dc12d34b474b231212bdf314113 release notes: http://www.vmware.com/support/vi3/doc/releasenotes_esx303.html 5

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

network

TYPE

Design Error

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES