Debian Security Advisory
DSA-2394-1 libxml2 -- several vulnerabilities
- Date Reported:
- 27 Jan 2012
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 652352, Bug 643648, Bug 656377.
In Mitre's CVE dictionary: CVE-2011-0216, CVE-2011-2821, CVE-2011-2834, CVE-2011-3905, CVE-2011-3919.
- More information:
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.