It was discovered that libxml2 did not correctly handle long entity names. If a user were tricked into processing a specially crafted XML document, a remote attacker could execute arbitrary code with user privileges or cause the application linked against libxml2 to crash, leading to a denial of service. (CVE-2008-3529)
USN-640-1 fixed vulnerabilities in libxml2. When processing extremely large XML documents with valid entities, it was possible to incorrectly trigger the newly added vulnerability protections. This update fixes the problem. (CVE-2008-3281)
11 September 2008
A security issue affects these releases of Ubuntu and its derivatives:
It was discovered that libxml2 did not correctly handle long entity names. If a user were tricked into processing a specially crafted XML document, a remote attacker could execute arbitrary code with user privileges or cause the application linked against libxml2 to crash, leading to a denial of service. (CVE-2008-3529)
USN-640-1 fixed vulnerabilities in libxml2. When processing extremely large XML documents with valid entities, it was possible to incorrectly trigger the newly added vulnerability protections. This update fixes the problem. (CVE-2008-3281)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the necessary changes.
Vulmon