libxml2 -- several vulnerabilities

2012-01-27T00:00:00
ID DSA-2394
Type debian
Reporter Debian
Modified 2012-01-27T00:00:00

Description

Many security problems have been fixed in libxml2, a popular library to handle XML data files.

Jüri Aedla discovered a heap-based buffer overflow that allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors.

An Off-by-one error have been discovered that allows remote attackers to execute arbitrary code or cause a denial of service.

A memory corruption (double free) bug has been identified in libxml2's XPath engine. Through it, it is possible for an attacker to cause a denial of service or possibly have unspecified other impact. This vulnerability does not affect the oldstable distribution (lenny).

Yang Dingning discovered a double free vulnerability related to XPath handling.

An out-of-bounds read vulnerability had been discovered, which allows remote attackers to cause a denial of service.

For the oldstable distribution (lenny), this problem has been fixed in version 2.6.32.dfsg-5+lenny5.

For the stable distribution (squeeze), this problem has been fixed in version 2.7.8.dfsg-2+squeeze2.

For the testing distribution (wheezy), this problem has been fixed in version 2.7.8.dfsg-7.

For the unstable distribution (sid), this problem has been fixed in version 2.7.8.dfsg-7.

We recommend that you upgrade your libxml2 packages.