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Ubuntu 12.10 USN-1656-1 Critical: Libxml2 Buffer Underflow Exploit

Applications using libxml2 could be made to crash or run programs asyour login if they opened a specially crafted file.. =========================================================================Ubuntu Security Notice USN-1656-1 December 06, 2012 libxml2 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.10 - Ubuntu 12.04 LTS - Ubuntu 11.10 - Ubuntu 10.04 LTS - Ubuntu 8.04 LTS Summary: Applications using libxml2 could be made to crash or run programs as your login if they opened a specially crafted file. Software Description: - libxml2: GNOME XML library Details: It was discovered that libxml2 had a heap-based buffer underflow when parsing entities. If a user or automated system were tricked into processing a specially crafted XML document, applications linked against libxml2 could be made to crash or possibly execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.10: libxml2 2.8.0+dfsg1-5ubuntu2.1 Ubuntu 12.04 LTS: libxml2 2.7.8.dfsg-5.1ubuntu4.3 Ubuntu 11.10: libxml2 2.7.8.dfsg-4ubuntu0.5 Ubuntu 10.04 LTS: libxml2 2.7.6.dfsg-1ubuntu1.7 Ubuntu 8.04 LTS: libxml2 2.6.31.dfsg-2ubuntu1.11 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-1656-1 CVE-2012-5134 Package Information: https://launchpad.net/ubuntu/+source/libxml2/2.8.0+dfsg1-5ubuntu2.1 https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.3 https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-4ubuntu0.5 https://launchpad.net/ubuntu/+source/libxml2/2.7.6.dfsg-1ubuntu1.7 https://launchpad.net/ubuntu/+source/libxml2/2.6.31.dfsg-2ubuntu1.11 . Ubuntu Security Notice USN-1656-1highlights a security flaw in libxml2 that could lead to application crashes or the potential execution of unauthorized code.. libxml2 Exploit, Ubuntu Security Notice, Critical Vulnerability. . Severity: Critical. LinuxSecurity.com Team

Dec 06, 2012 •Critical Ubuntu