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Vulnerability Alert

Linux KernelĀ IPv6 Traffic Local Denial of Service Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:20105
Version:6
First Published:2010 March 18 18:05 GMT
Last Published:2013 March 28 22:13 GMT
Port: Not available
CVE:CVE-2010-0437
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:7.1 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:5.3
 
Version Summary:MontaVista Software has released a changelog and updated software to address the Linux Kernel IPv6 traffic local denial of service vulnerability.
 
 
Description
Linux Kernel versions 2.6.26 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the targeted system.

The vulnerability is due memory corruption when the Red Hat Linux Kernel processes IPv6 traffic. An unauthenticated, remote attacker could exploit the vulnerability by sending IPv6 traffic to an affected system. When the crafted IPv6 traffic is processed, a use-after-free memory error could occur that corrupts memory. An attacker could take advantage of the memory corruption to cause a kernel panic, resulting in a DoS condition.

Kernel.org has confirmed this vulnerability and released updated software.
 
Warning Indicators
Linux Kernel versions 2.6.26 and prior are vulnerable.
 
IntelliShield Analysis
Limited information is available to describe this vulnerability. A successful exploit could allow an unauthenticated, remote attacker to cause a kernel OOPS, resulting in a DoS condition.
 
Vendor Announcements
Kernel.org has released a changelog at the following link: Kernel 2.6.27 - Tue Sep 9 13:51:35 2008 -0700

MontaVista Software has released a changelog for registered users on March 27, 2013, at the following link: MontaVista Security Fixes

Red Hat has released security advisories at the following links: RHSA-2010:0147, RHSA-2010:0148, RHSA-2010:0149, and RHSA-2010:0161

VMware has re-released a security advisory at the following link: VMSA-2011-0003
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to cause a kernel panic on the target system, resulting in a DoS condition.
 
Technical Information
This vulnerability exists because the ip6_dst_lookup_tail() function used to process IPv6 traffic incorrectly handles the NULL pointer returned when the dst->neighbor field is NULL.

An unauthenticated, remote attacker could exploit this vulnerability by sending crafted IPv6 traffic to the affected system. Processing of the crafted IPv6 traffic could result in a pointer dereference error that corrupts memory. The attacker could take advantage of the memory corruption to cause a kernel panic, resulting in a DoS condition.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators are advised to monitor affected systems.
 
Patches/Software
Kernel.org has released updated versions at the following link: Kernel 2.6.27 or later

CentOS packages can be updated using the up2date or yum command.

MontaVista Software has released updated software for registered users at the following link: CGE 5.1

Red Hat packages can be updated using the up2date or yum command.

VMware has released updated software at the following links:

ESX 4.1
ESX410-201101201-SG

ESX 4.0
ESX400-201103401-SG

 
Alert History
 

Version 5, March 9, 2011, 8:31 AM: Kernel.org has released a changelog and updated software to address the Linux Kernel IPv6 traffic local denial of service vulnerability.  VMware has also re-released a security advisory and updated software to address this vulnerability.

Version 4, February 11, 2011, 12:09 PM: VMware has released a security advisory and updated software to address the Linux Kernel IPv6 traffic local denial of service vulnerability.

Version 3, March 24, 2010, 7:21 AM: Red Hat has released an additional security advisory and updated packages to address the Linux Kernel IPv6 traffic local denial of service vulnerability.

Version 2, March 19, 2010, 8:41 AM: CentOS has released updated packages to address the Linux Kernel IPv6 traffic local denial of service vulnerability.

Version 1, March 18, 2010, 2:05 PM: The Linux Kernel contains a vulnerability that could allow a unauthenticated, remote attacker to cause a denial of service condition on the targeted system.  Third-party updates are available.



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Linus TorvaldsLinux Kernel 2.6.0 .0 | 2.6.1 .0 | 2.6.2 .0 | 2.6.3 .0 | 2.6.4 .0 | 2.6.5 .0 | 2.6.6 .0 | 2.6.7 .0 | 2.6.8 .0, .1 | 2.6.9 .0 | 2.6.10 .0 | 2.6.11 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12 | 2.6.12 .0, .1, .2, .3, .4, .5, .6 | 2.6.13 .0, .1, .2, .3, .4, .5 | 2.6.14 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.15 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.16 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .20, .21, .22, .23, .24, .25, .26, .27, .28, .29, .30, .31, .32, .33, .34, .35, .36, .37, .38, .39, .40, .41, .42, .43, .44, .45, .46, .47, .48, .49, .50, .51, .52, .53, .54, .55, .56, .57, .58, .59, .60, .61, .62 | 2.6.17 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14 | 2.6.18 .0, .1, .2, .3, .4, .5, .6, .7, .8 | 2.6.19 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.20 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .20, .21 | 2.6.21 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.22 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19 | 2.6.23 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17 | 2.6.24 .0, .1, .2, .3, .4, .5, .6, .7 | 2.6.25 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .20 | 2.6.26 .0, .1, .2, .3, .4, .5, .6, .7

Associated Products:
CentOS ProjectCentOS 5 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64, .3 i386, .3 x86_64
MontaVistaMontaVista Linux CGE 5.1
Red Hat, Inc.Red Hat Enterprise Linux 5 IA-32, IA-64, PPC, ppc64, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop 5 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux EUS (Extended Update Support) 5.2.z IA-32, IA-64, PPC, PPC64, s390x, x86-64 | 5.3.z IA-32, IA-64, PPC, ppc64, s390x, x86_64 | 5.4.z IA-32, IA-64, PPC, PPC64, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise MRG for Enterprise Linux 1 ia-32, x86_64
VMware, Inc.VMware ESX Server 4.0 Base | 4.1 Base




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