USN-673-1: libxml2 vulnerabilities

Releases

• Ubuntu 8.10
• Ubuntu 8.04
• Ubuntu 7.10
• Ubuntu 6.06

Packages

• libxml2 -

Details

Drew Yao discovered that libxml2 did not correctly handle certain corrupt
XML documents. If a user or automated system were tricked into processing
a malicious XML document, a remote attacker could cause applications
linked against libxml2 to enter an infinite loop, leading to a denial
of service. (CVE-2008-4225)

Drew Yao discovered that libxml2 did not correctly handle large memory
allocations. If a user or automated system were tricked into processing a
very large XML document, a remote attacker could cause applications linked
against libxml2 to crash, leading to a denial of service. (CVE-2008-4226)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 8.10

• libxml2 - 2.6.32.dfsg-4ubuntu1.1

Ubuntu 8.04

• libxml2 - 2.6.31.dfsg-2ubuntu1.3

Ubuntu 7.10

• libxml2 - 2.6.30.dfsg-2ubuntu1.4

Ubuntu 6.06

• libxml2 - 2.6.24.dfsg-1ubuntu1.4

After a standard system upgrade you need to restart your sessions to effect
the necessary changes.

References

• CVE-2008-4225
• CVE-2008-4226