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CVE-2012-0841

Status Candidate

Overview

libxml2 before 2.8.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data.

Related Files

Apple Security Advisory 2014-01-22-1
Posted Jan 24, 2014
Authored by Apple | Site apple.com

Apple Security Advisory 2014-01-22-1 - iTunes 11.1.4 is now available and addresses multiple security issues related to content control, code execution, and more. libxml and libxslt have also been updated to address memory corruption and code execution issues.

tags | advisory, code execution
systems | apple
advisories | CVE-2011-3102, CVE-2012-0841, CVE-2012-2807, CVE-2012-2825, CVE-2012-2870, CVE-2012-2871, CVE-2012-5134, CVE-2013-1024, CVE-2013-1037, CVE-2013-1038, CVE-2013-1039, CVE-2013-1040, CVE-2013-1041, CVE-2013-1042, CVE-2013-1043, CVE-2013-1044, CVE-2013-1045, CVE-2013-1046, CVE-2013-1047, CVE-2013-2842, CVE-2013-5125, CVE-2013-5126, CVE-2013-5127, CVE-2013-5128, CVE-2014-1242
MD5 | 456cb32347833dbbe45b5def70743501
Apple Security Advisory 2013-09-20-1
Posted Sep 20, 2013
Authored by Apple | Site apple.com

Apple Security Advisory 2013-09-20-1 - Apple TV 6.0 is now available and addresses 57 different vulnerabilities.

tags | advisory, vulnerability
systems | apple
advisories | CVE-2011-2391, CVE-2011-3102, CVE-2012-0841, CVE-2012-2807, CVE-2012-2825, CVE-2012-2870, CVE-2012-2871, CVE-2012-5134, CVE-2013-0879, CVE-2013-0991, CVE-2013-0992, CVE-2013-0993, CVE-2013-0994, CVE-2013-0995, CVE-2013-0996, CVE-2013-0997, CVE-2013-0998, CVE-2013-0999, CVE-2013-1000, CVE-2013-1001, CVE-2013-1002, CVE-2013-1003, CVE-2013-1004, CVE-2013-1005, CVE-2013-1006, CVE-2013-1007, CVE-2013-1008, CVE-2013-1010
MD5 | 46c6f327ff025947e5f2f7361afc299e
Apple Security Advisory 2013-09-18-2
Posted Sep 19, 2013
Authored by Apple | Site apple.com

Apple Security Advisory 2013-09-18-2 - iOS 7 is now available and addresses Certificate Trust Policy, Core Graphics, Core Media, Data Protection, and various other issues and vulnerabilities.

tags | advisory, vulnerability
systems | cisco, apple, ios
advisories | CVE-2011-2391, CVE-2011-3102, CVE-2012-0841, CVE-2012-2807, CVE-2012-2825, CVE-2012-2870, CVE-2012-2871, CVE-2012-5134, CVE-2013-0879, CVE-2013-0926, CVE-2013-0957, CVE-2013-0991, CVE-2013-0992, CVE-2013-0993, CVE-2013-0994, CVE-2013-0995, CVE-2013-0996, CVE-2013-0997, CVE-2013-0998, CVE-2013-0999, CVE-2013-1000, CVE-2013-1001, CVE-2013-1002, CVE-2013-1003, CVE-2013-1004, CVE-2013-1005, CVE-2013-1006, CVE-2013-1007
MD5 | 53c5afa6b4f05a46d075c6a9e3ae7cdc
Red Hat Security Advisory 2013-0217-01
Posted Feb 1, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-0217-01 - These packages provide the libxml2 library, a development toolbox providing the implementation of various XML standards, for users of MinGW. IMPORTANT NOTE: The mingw32 packages in Red Hat Enterprise Linux 6 will no longer be updated proactively and will be deprecated with the release of Red Hat Enterprise Linux 6.4. These packages were provided to support other capabilities in Red Hat Enterprise Linux and were not intended for direct customer use. Customers are advised to not use these packages with immediate effect. Future updates to these packages will be at Red Hat's discretion and these packages may be removed in a future minor release.

tags | advisory
systems | linux, redhat
advisories | CVE-2010-4008, CVE-2010-4494, CVE-2011-0216, CVE-2011-1944, CVE-2011-2821, CVE-2011-2834, CVE-2011-3102, CVE-2011-3905, CVE-2011-3919, CVE-2012-0841, CVE-2012-5134
MD5 | 5d58753a06f8a0e9b2707ea31764ec03
VMware Security Advisory 2012-0012
Posted Jul 13, 2012
Authored by VMware | Site vmware.com

VMware Security Advisory 2012-0012 - VMware ESXi update addresses several security issues.

tags | advisory
advisories | CVE-2010-4008, CVE-2010-4494, CVE-2011-0216, CVE-2011-1944, CVE-2011-2821, CVE-2011-2834, CVE-2011-3905, CVE-2011-3919, CVE-2012-0841
MD5 | 88bdb05b2e09a6f74db93a991c7c1834
Gentoo Linux Security Advisory 201203-04
Posted Mar 6, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201203-4 - A hash collision vulnerability in libxml2 allows remote attackers to cause a Denial of Service condition. Versions less than 2.7.8-r5 are affected.

tags | advisory, remote, denial of service
systems | linux, gentoo
advisories | CVE-2012-0841
MD5 | 7f61c6a368fafc69f2409fd2feaefafb
Ubuntu Security Notice USN-1376-1
Posted Feb 28, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1376-1 - Juraj Somorovsky discovered that libxml2 was vulnerable to hash table collisions. If a user or application linked against libxml2 were tricked into opening a specially crafted XML file, an attacker could cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2012-0841
MD5 | 5dea3786c8208c8deccce3066fe74417
Debian Security Advisory 2417-1
Posted Feb 24, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2417-1 - It was discovered that the internal hashing routine of libxml2, a library providing an extensive API to handle XML data, is vulnerable to predictable hash collisions. Given an attacker with knowledge of the hashing algorithm, it is possible to craft input that creates a large amount of collisions. As a result it is possible to perform denial of service attacks against applications using libxml2 functionality because of the computational overhead.

tags | advisory, denial of service
systems | linux, debian
advisories | CVE-2012-0841
MD5 | 00de024fa728080e93fdfa4ec2bf3908
Mandriva Linux Security Advisory 2012-023
Posted Feb 23, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-023 - It was found that the hashing routine used by libxml2 arrays was susceptible to predictable hash collisions. Sending a specially-crafted message to an XML service could result in longer processing time, which could lead to a denial of service. To mitigate this issue, randomization has been added to the hashing function to reduce the chance of an attacker successfully causing intentional collisions. The updated packages have been patched to correct this issue.

tags | advisory, denial of service
systems | linux, mandriva
advisories | CVE-2012-0841
MD5 | e90ebcfa22533ef068df780bc157e703
Red Hat Security Advisory 2012-0324-01
Posted Feb 22, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0324-01 - The libxml2 library is a development toolbox providing the implementation of various XML standards. It was found that the hashing routine used by libxml2 arrays was susceptible to predictable hash collisions. Sending a specially-crafted message to an XML service could result in longer processing time, which could lead to a denial of service. To mitigate this issue, randomization has been added to the hashing function to reduce the chance of an attacker successfully causing intentional collisions. All users of libxml2 are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. The desktop must be restarted for this update to take effect.

tags | tool, local
systems | unix
advisories | CVE-2012-0841
MD5 | 8831c464a231316b4517c58945746961
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