ID

VAR-201009-0065

CVE

CVE-2010-2834

TITLE

plural Cisco Service disruption in products (DoS) Vulnerabilities

DESCRIPTION

Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5)SU1, 7.x before 7.1(5), and 8.0 before 8.0(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via crafted SIP registration traffic over UDP, aka Bug IDs CSCtf72678 and CSCtf14987. plural Cisco The product includes SIP Service operation is interrupted due to incomplete processing (DoS) There is a vulnerability that becomes a condition. The problem is Bug IDs CSCtf72678 and CSCtf14987 It is a problem.By a third party UDP Cleverly crafted via SIP Service disruption through registered traffic (DoS) There is a possibility of being put into a state. Cisco Unified Communications Manager is a call processing component in the Cisco IP Telephony solution. When dealing with an illegal \"Refer-To\" header, there is an error, and special SIP messages can be used to terminate important processes and disrupt voice services. An attacker can exploit this issue to cause an interruption in voice services or cause the affected device to reload, denying service to legitimate users. This issue is tracked by Cisco Bug IDs CSCtf14987 and CSCtf72678. Cisco IOS is an operating system developed by Cisco in the United States for its network equipment. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnerabilities Advisory ID: cisco-sa-20100922-cucmsip http://www.cisco.com/warp/public/707/cisco-sa-20100922-cucmsip.shtml Revision 1.0 For Public Release 2010 September 22 1600 UTC (GMT) - --------------------------------------------------------------------- Summary ======= Cisco Unified Communications Manager contains two denial of service (DoS) vulnerabilities that affect the processing of Session Initiation Protocol (SIP) messages. To address these vulnerabilities, Cisco has released free software updates. There is a workaround for these vulnerabilities. This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20100922-cucmsip.shtml Note: Cisco IOS Software is also affected by the vulnerabilities described in this advisory. A companion advisory for Cisco IOS software is available at: http://www.cisco.com/warp/public/707/cisco-sa-20100922-sip.shtml Note: The September 22, 2010, Cisco IOS Software Security Advisory bundled publication includes six Cisco Security Advisories. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory. The software version can also be determined by running the show version active command via the command-line interface. No other Cisco products are currently known to be affected by these vulnerabilities. All SIP ports (TCP ports 5060 and 5061 and UDP ports 5060 and 5061) are affected. The first SIP DoS vulnerability is documented in Cisco Bug ID CSCta31358 ( registered customers only) and has been assigned the CVE identifier CVE-2010-2835. The corresponding IOS defect is CSCta20040. The second SIP DoS vulnerability is documented in Cisco Bug ID CSCtf14987 ( registered customers only) and has been assigned the CVE identifier CVE-2010-2834. The corresponding IOS defect is CSCtf72678. 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 CSCta31358 - c3945 GW crashes while testing REFER method with invalid Refer-To header CVSS Base Score - 7.8 Access Vector Network Access Complexity Low Authentication None Confidentiality Impact None Integrity Impact None Availability Impact Complete CVSS Temporal Score - 6.4 Exploitability Functional Remediation Level Official Fix Report Confidence Confirmed CSCtf14987 - CCM Coredump Generated During UDP SIP Registration Fuzzing CVSS Base Score - 7.8 Access Vector Network Access Complexity Low Authentication None Confidentiality Impact None Integrity Impact None Availability Impact Complete CVSS Temporal Score - 6.4 Exploitability Functional Remediation Level Official Fix Report Confidence Confirmed Impact ====== Successful exploitation of the vulnerabilities that are described in this advisory could result in the interruption of voice services. 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. +---------------------------------------+ | Cisco Unified | Recommended | | Communication Manager | Release | | Version | | |-------------------------+-------------| | 6.x | 6.1(5)SU1 | |-------------------------+-------------| | 7.x | 7.1(5b)SU2 | |-------------------------+-------------| | 8.x | 8.0(3a) | +---------------------------------------+ Note: The recommended releases listed in the table above are the latest Cisco Unified Communications Manager versions available at the publication of this advisory, and each release includes software fixes for all the vulnerabilities described in this advisory. Cisco Unified Communications Manager software can be downloaded at the following link: http://tools.cisco.com/support/downloads/go/Redirect.x?mdfid=268439621 Workarounds =========== For customers who do not use SIP in their environment, there is a workaround for these vulnerabilities. SIP processing is enabled by default. Use the following instructions to disable SIP processing: Step 1: Log into the Cisco Unified CM Administration web interface. Step 3: Change the "SIP Interoperability Enabled" parameter to False, and click Save. For information on how to restart the service, refer to the "Restarting the Cisco CallManager Service" section of the document at: http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_1_2/ccmcfg/b03dpi.html#wp1075124 It is possible to mitigate these vulnerabilities by implementing filtering on screening devices and permitting access to TCP ports 5060 and 5061 and UDP ports 5060 and 5061 only from networks that require SIP access to Cisco Unified Communications Manager servers. Additional mitigations that can be deployed on Cisco devices in the network are available in the companion document "Cisco Applied Mitigation Bulletin: Identifying and Mitigating Exploitation of the Multiple Vulnerabilities in Cisco Voice Products", which is available at the following location: http://www.cisco.com/warp/public/707/cisco-amb-20100922-voice.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/docs/general/warranty/English/EU1KEN_.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/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages. Exploitation and Public Announcements ===================================== The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory. All vulnerabilities described in this advisory were discovered as a result of internal testing conducted by Cisco. 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-20100922-cucmsip.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-bulletins@lists.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 | 2010-September-22 | 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (Darwin) iEYEARECAAYFAkyaIp0ACgkQ86n/Gc8U/uCsDQCbBrZ7ciwiNVxErJOxLLICNgXv dE0An3lej+RKwoUMMf+GKTm/BBOHmlQL =dwdr -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/ . ---------------------------------------------------------------------- Windows Applications Insecure Library Loading The Official, Verified Secunia List: http://secunia.com/advisories/windows_insecure_library_loading/ The list is continuously updated as we confirm the vulnerability reports so check back regularly too see if any of your apps are affected. ---------------------------------------------------------------------- TITLE: Cisco IOS SIP Multiple Denial of Service Vulnerabilities SECUNIA ADVISORY ID: SA41549 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/41549/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=41549 RELEASE DATE: 2010-09-24 DISCUSS ADVISORY: http://secunia.com/advisories/41549/#comments AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s) http://secunia.com/advisories/41549/ ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS https://ca.secunia.com/?page=viewadvisory&vuln_id=41549 ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/ DESCRIPTION: Multiple vulnerabilities have been reported in Cisco IOS, which can be exploited by malicious people to cause a DoS (Denial of Service). For more information see vulnerability #1: SA36498 2) An error when processing certain unspecified Session Initiation Protocol (SIP) traffic can be exploited to cause a device to reload. 3) An error when processing specially crafted Session Initiation Protocol (SIP) packets can be exploited to cause a device to reload. SOLUTION: Apply updates (please see the vendor's advisory for details). PROVIDED AND/OR DISCOVERED BY: Reported by the vendor. ORIGINAL ADVISORY: cisco-sa-20100922-sip: http://www.cisco.com/warp/public/707/cisco-sa-20100922-sip.shtml OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ DEEP LINKS: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXPLOIT: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/advisories/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ---------------------------------------------------------------------- . SOLUTION: Update to the latest version

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

lack of information

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Cisco

SOURCES

LAST UPDATE DATE

2024-11-23T21:47:14.809000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE