ID

VAR-200810-0004

CVE

CVE-2008-2476

TITLE

IPv6 implementations insecurely update Forwarding Information Base

DESCRIPTION

The IPv6 Neighbor Discovery Protocol (NDP) implementation in (1) FreeBSD 6.3 through 7.1, (2) OpenBSD 4.2 and 4.3, (3) NetBSD, (4) Force10 FTOS before E7.7.1.1, (5) Juniper JUNOS, and (6) Wind River VxWorks 5.x through 6.4 does not validate the origin of Neighbor Discovery messages, which allows remote attackers to cause a denial of service (loss of connectivity) or read private network traffic via a spoofed message that modifies the Forward Information Base (FIB). A vulnerability in some implementations of the IPv6 Neighbor Discovery Protocol may allow a nearby attacker to intercept traffic or cause congested links to become overloaded. This false information can modify the Forward Information Base (FIB). Operating systems affected by the vulnerability: Wind River Systems VxWorks 6.4 Wind River Systems VxWorks 5 OpenBSD OpenBSD 4.4 OpenBSD OpenBSD 4.3 OpenBSD OpenBSD 4.2 NetBSD NetBSD 3.0.2 NetBSD NetBSD 3.0.1 NetBSD NetBSD Current NetBSD NetBSD 4.0 NetBSD NetBSD 3.1_RC3 NetBSD NetBSD 3.1 NetBSD NetBSD 3.1 NetBSD NetBSD 3,1_RC1 Navision Financials Server 3.0 MidnightBSD MidnightBSD 0.2.1 MidnightBSD MidnightBSD 0.1.1 MidnightBSD MidnightBSD 0.3 MidnightBSD MidnightBSD 0.1 Juniper Networks WXC Series 0 Juniper Networks WX Series 0 Juniper Networks Session and Resource Control Appliance 2.0 Juniper Networks Session and Resource Control Appliance 1. ---------------------------------------------------------------------- Did you know that a change in our assessment rating, exploit code availability, or if an updated patch is released by the vendor, is not part of this mailing-list? Click here to learn more: http://secunia.com/advisories/business_solutions/ ---------------------------------------------------------------------- TITLE: HP-UX IPv6 Neighbor Discovery Protocol Neighbor Solicitation Vulnerability SECUNIA ADVISORY ID: SA33787 VERIFY ADVISORY: http://secunia.com/advisories/33787/ CRITICAL: Less critical IMPACT: Spoofing, Exposure of sensitive information, DoS WHERE: >From local network OPERATING SYSTEM: HP-UX 11.x http://secunia.com/advisories/product/138/ DESCRIPTION: A vulnerability has been reported in HP-UX, which can be exploited by malicious people to conduct spoofing attacks, disclose potentially sensitive information, or to cause a DoS (Denial of Service). This is related to: SA32112 The vulnerability is reported in HP-UX B.11.11, B.11.23, and B.11.31 running IPv6. SOLUTION: Apply patches. HP-UX B.11.11: Install patch PHNE_37898 or subsequent. HP-UX B.11.23: Install patch PHNE_37897 or subsequent. HP-UX B.11.31: Install patch PHNE_38680 or subsequent. PROVIDED AND/OR DISCOVERED BY: Reported by the vendor. ORIGINAL ADVISORY: HPSBUX02407 SSRT080107: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01662367 OTHER REFERENCES: SA32112: http://secunia.com/advisories/32112/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody 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 ---------------------------------------------------------------------- . Vendor affected: TP-Link (http://tp-link.com) Products affected: * All TP-Link VxWorks-based devices (confirmed by vendor) * All "2-series" switches (confirmed by vendor) * TL-SG2008 semi-managed switch (confirmed by vendor) * TL-SG2216 semi-managed switch (confirmed by vendor) * TL-SG2424 semi-managed switch (confirmed by vendor) * TL-SG2424P semi-managed switch (confirmed by vendor) * TL-SG2452 semi-managed switch (confirmed by vendor) Vulnerabilities: * All previously-reported VxWorks vulnerabilities from 6.6.0 on; at the very least: * CVE-2013-0716 (confirmed by vendor) * CVE-2013-0715 (confirmed by vendor) * CVE-2013-0714 (confirmed by vendor) * CVE-2013-0713 (confirmed by vendor) * CVE-2013-0712 (confirmed by vendor) * CVE-2013-0711 (confirmed by vendor) * CVE-2010-2967 (confirmed by vendor) * CVE-2010-2966 (confirmed by vendor) * CVE-2008-2476 (confirmed by vendor) * SSLv2 is available and cannot be disabled unless HTTPS is completely disabled (allows downgrade attacks) (confirmed by vendor) * SSL (v2, v3) offers insecure cipher suites and HMACs which cannot be disabled (allows downgrade attacks) (confirmed by vendor) Design flaws: * Telnet is available and cannot be disabled (confirmed by vendor) * SSHv1 enabled by default if SSH is enabled (confirmed by vendor) Vendor response: TP-Link are not convinced that these flaws should be repaired. TP-Link's Internet presence -- or at least DNS -- is available only intermittently. Most emails bounced. Lost contact with vendor, but did confirm that development lead is now on holiday and will not return for at least a week. Initial vendor reaction was to recommend purchase of "3-series" switches. Vendor did not offer reasons why "3-series" switches would be more secure, apart from lack of telnet service. Vendor confirmed that no development time can be allocated to securing "2-series" product and all focus has shifted to newer products. (TL-SG2008 first product availability July 2014...) Vendor deeply confused about security of DES/3DES, MD5, claimed that all security is relative. ("...[E]ven SHA-1 can be cracked, they just have different security level.") Fix availability: None. Work-arounds advised: None possible. Remove products from network. Corrected: 2008-10-01 00:32:59 UTC (RELENG_7, 7.1-PRERELEASE) 2008-10-01 00:32:59 UTC (RELENG_7_0, 7.0-RELEASE-p5) 2008-10-01 00:32:59 UTC (RELENG_6, 6.4-PRERELEASE) 2008-10-01 00:32:59 UTC (RELENG_6_3, 6.3-RELEASE-p5) CVE Name: CVE-2008-2476 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit <URL:http://security.FreeBSD.org/>. I. Background IPv6 nodes use the Neighbor Discovery protocol to determine the link-layer address of other nodes, find routers, and maintain reachability information. The Neighbor Discovery protocol uses Neighbor Solicitation (ICMPv6 type 135) to query target nodes for their link-layer addresses. II. Problem Description IPv6 routers may allow "on-link" IPv6 nodes to create and update the router's neighbor cache and forwarding information. A malicious IPv6 node sharing a common router but on a different physical segment from another node may be able to spoof Neighbor Discovery messages, allowing it to update router information for the victim node. III. Impact An attacker on a different physical network connected to the same IPv6 router as another node could redirect IPv6 traffic intended for that node. IV. Workaround Firewall packet filters can be used to filter incoming Neighbor Solicitation messages but may interfere with normal IPv6 operation if not configured carefully. Reverse path forwarding checks could be used to make gateways, such as routers or firewalls, drop Neighbor Solicitation messages from nodes with unexpected source addresses on a particular interface. V. Solution NOTE WELL: The solution described below causes IPv6 Neighbor Discovery Neighbor Solicitation messages from non-neighbors to be ignored. This can be re-enabled if required by setting the newly added net.inet6.icmp6.nd6_onlink_ns_rfc4861 sysctl to a non-zero value. Perform one of the following: 1) Upgrade your vulnerable system to 6-STABLE, or 7-STABLE, or to the RELENG_7_0, or RELENG_6_3 security branch dated after the correction date. 2) To patch your present system: The following patches have been verified to apply to FreeBSD 6.3 and 7.0 systems. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. [FreeBSD 6.3] # fetch http://security.FreeBSD.org/patches/SA-08:10/nd6-6.patch # fetch http://security.FreeBSD.org/patches/SA-08:10/nd6-6.patch.asc [FreeBSD 7.0] # fetch http://security.FreeBSD.org/patches/SA-08:10/nd6-7.patch # fetch http://security.FreeBSD.org/patches/SA-08:10/nd6-7.patch.asc b) Apply the patch. # cd /usr/src # patch < /path/to/patch c) Recompile your kernel as described in <URL:http://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the system. VI. Correction details The following list contains the revision numbers of each file that was corrected in FreeBSD. Branch Revision Path - ------------------------------------------------------------------------- RELENG_6 src/sys/netinet6/in6.h 1.36.2.10 src/sys/netinet6/in6_proto.c 1.32.2.10 src/sys/netinet6/nd6.h 1.19.2.4 src/sys/netinet6/nd6_nbr.c 1.29.2.11 RELENG_6_3 src/UPDATING 1.416.2.37.2.10 src/sys/conf/newvers.sh 1.69.2.15.2.9 src/sys/netinet6/in6.h 1.36.2.8.2.1 src/sys/netinet6/in6_proto.c 1.32.2.8.2.1 src/sys/netinet6/nd6.h 1.19.2.2.6.1 src/sys/netinet6/nd6_nbr.c 1.29.2.9.2.1 RELENG_7 src/sys/netinet6/in6.h 1.51.2.2 src/sys/netinet6/in6_proto.c 1.46.2.3 src/sys/netinet6/nd6.h 1.21.2.2 src/sys/netinet6/nd6_nbr.c 1.47.2.3 RELENG_7_0 src/UPDATING 1.507.2.3.2.9 src/sys/conf/newvers.sh 1.72.2.5.2.9 src/sys/netinet6/in6.h 1.51.4.1 src/sys/netinet6/in6_proto.c 1.46.4.1 src/sys/netinet6/nd6.h 1.21.4.1 src/sys/netinet6/nd6_nbr.c 1.47.4.1 - ------------------------------------------------------------------------- VII. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 SUPPORT COMMUNICATION - SECURITY BULLETIN Document ID: c01662367 Version: 1 HPSBUX02407 SSRT080107 rev.1 - HP-UX Running IPv6, Remote Denial of Service (DoS) and Unauthorized Access NOTICE: The information in this Security Bulletin should be acted upon as soon as possible. Release Date: 2009-02-02 Last Updated: 2009-02-02 Potential Security Impact: Remote Denial of Service (DoS) and unauthorized access Source: Hewlett-Packard Company, HP Software Security Response Team VULNERABILITY SUMMARY A potential security vulnerability has been identified with HP-UX running IPv6. This vulnerability could be exploited remotely resulting in a Denial of Service (DoS) and unauthorized access. References: CVE-2008-2476, CVE-2008-4404 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. HP-UX B.11.11, B.11.23, B.11.31 running IPv6 BACKGROUND CVSS 2.0 Base Metrics =============================================== Reference Base Vector Base Score CVE-2008-2476 (AV:N/AC:M/Au:N/C:C/I:C/A:C) 9.3 CVE-2008-4404 (AV:N/AC:L/Au:N/C:C/I:C/A:C) 10.0 =============================================== Information on CVSS is documented in HP Customer Notice: HPSN-2008-002. RESOLUTION HP has provided the following software patches to resolve the vulnerabilities. The patches are available for download from: http://itrc.hp.com HP-UX Release - B.11.11 (11i v1) Patch ID - PHNE_37898 HP-UX Release - B.11.23 (11i v2) Patch ID - PHNE_37897 HP-UX Release - B.11.31 (11i v3) Patch ID - PHNE_38680 MANUAL ACTIONS: No PRODUCT SPECIFIC INFORMATION HP-UX Software Assistant: HP-UX Software Assistant is an enhanced application that replaces HP-UX Security Patch Check. It analyzes all Security Bulletins issued by HP and lists recommended actions that may apply to a specific HP-UX system. It can also download patches and create a depot automatically. For more information see: https://www.hp.com/go/swa The following text is for use by the HP-UX Software Assistant. AFFECTED VERSIONS HP-UX B.11.11 ============= Networking.NET-KRN Networking.NET-PRG Networking.NET-RUN Networking.NET-RUN-64 OS-Core.CORE-KRN ProgSupport.C-INC Networking.NET2-KRN Networking.NMS2-KRN OS-Core.CORE2-KRN OS-Core.SYS-ADMIN Networking.NET2-KRN Networking.NMS2-KRN OS-Core.CORE2-KRN OS-Core.SYS-ADMIN action: install patch PHNE_37898 or subsequent URL: http://itrc.hp.com HP-UX B.11.23 ============= Networking.NET-PRG Networking.NET-RUN ProgSupport.C-INC Networking.NET-RUN-64 Networking.NET2-KRN Networking.NET2-RUN Networking.NMS2-KRN OS-Core.CORE2-KRN OS-Core.SYS2-ADMIN Networking.NET-RUN-64 Networking.NET2-KRN Networking.NET2-RUN Networking.NMS2-KRN OS-Core.CORE2-KRN OS-Core.SYS2-ADMIN action: install patch PHNE_37897 or subsequent URL: http://itrc.hp.com HP-UX B.11.31 ============= Networking.NET-RUN ProgSupport.C-INC Networking.NET-RUN-64 Networking.NET2-KRN Networking.NET2-RUN Networking.NMS2-KRN OS-Core.CORE2-KRN OS-Core.SYS2-ADMIN Networking.NET-RUN-64 Networking.NET2-KRN Networking.NET2-RUN Networking.NMS2-KRN OS-Core.CORE2-KRN OS-Core.SYS2-ADMIN action: install patch PHNE_38680 or subsequent URL: http://itrc.hp.com END AFFECTED VERSIONS HISTORY Version:1 (rev.1) - 2 February 2009 Initial release Third Party Security Patches: Third party security patches that are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy. Support: For further information, contact normal HP Services support channel. Report: To report a potential security vulnerability with any HP supported product, send Email to: security-alert@hp.com It is strongly recommended that security related information being communicated to HP be encrypted using PGP, especially exploit information. To get the security-alert PGP key, please send an e-mail message as follows: To: security-alert@hp.com Subject: get key Subscribe: To initiate a subscription to receive future HP Security Bulletins via Email: http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA&langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC On the web page: ITRC security bulletins and patch sign-up Under Step1: your ITRC security bulletins and patches - check ALL categories for which alerts are required and continue. Under Step2: your ITRC operating systems - verify your operating system selections are checked and save. To update an existing subscription: http://h30046.www3.hp.com/subSignIn.php Log in on the web page: Subscriber's choice for Business: sign-in. On the web page: Subscriber's Choice: your profile summary - use Edit Profile to update appropriate sections. To review previously published Security Bulletins visit: http://www.itrc.hp.com/service/cki/secBullArchive.do * The Software Product Category that this Security Bulletin relates to is represented by the 5th and 6th characters of the Bulletin number in the title: GN = HP General SW MA = HP Management Agents MI = Misc. 3rd Party SW MP = HP MPE/iX NS = HP NonStop Servers OV = HP OpenVMS PI = HP Printing & Imaging ST = HP Storage SW TL = HP Trusted Linux TU = HP Tru64 UNIX UX = HP-UX VV = HP VirtualVault System management and security procedures must be reviewed frequently to maintain system integrity. HP is continually reviewing and enhancing the security features of software products to provide customers with current secure solutions. "HP is broadly distributing this Security Bulletin in order to bring to the attention of users of the affected HP products the important security information contained in this Bulletin. HP recommends that all users determine the applicability of this information to their individual situations and take appropriate action. HP does not warrant that this information is necessarily accurate or complete for all user situations and, consequently, HP will not be responsible for any damages resulting from user's use or disregard of the information provided in this Bulletin. To the extent permitted by law, HP disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose, title and non-infringement." \xa9Copyright 2009 Hewlett-Packard Development Company, L.P. Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental, special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. -----BEGIN PGP SIGNATURE----- Version: PGP 8.1 iQA/AwUBSYdFsuAfOvwtKn1ZEQK0VACeIKetdQfBDsssaZYXnerHz8AEwzEAn2iy saLPK+/sw3/02JA+b0HuzPfv =HTAW -----END PGP SIGNATURE-----

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

input validation

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

David Miles reported this issue.

SOURCES

LAST UPDATE DATE

2024-11-11T20:07:42.032000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE