USN-1904-2: libxml2 regression

Releases

• Ubuntu 13.04
• Ubuntu 12.10
• Ubuntu 12.04
• Ubuntu 10.04

Packages

• libxml2 - GNOME XML library

Details

USN-1904-1 fixed vulnerabilities in libxml2. The update caused a regression
for certain users. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that libxml2 would load XML external entities by default.
If a user or automated system were tricked into opening a specially crafted
document, an attacker could possibly obtain access to arbitrary files or
cause resource consumption. This issue only affected Ubuntu 10.04 LTS,
Ubuntu 12.04 LTS, and Ubuntu 12.10. (CVE-2013-0339)

It was discovered that libxml2 incorrectly handled documents that end
abruptly. If a user or automated system were tricked into opening a
specially crafted document, an attacker could possibly cause libxml2 to
crash, resulting in a denial of service. (CVE-2013-2877)

Update instructions

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

Ubuntu 13.04

• libxml2 - 2.9.0+dfsg1-4ubuntu4.3

Ubuntu 12.10

• libxml2 - 2.8.0+dfsg1-5ubuntu2.4

Ubuntu 12.04

• libxml2 - 2.7.8.dfsg-5.1ubuntu4.6

Ubuntu 10.04

• libxml2 - 2.7.6.dfsg-1ubuntu1.10

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• https://launchpad.net/bugs/1201849