Ubuntu 13.04 USN-1904-1 Moderate: libxml2 Denial Of Service

ubuntu

July 15, 2013

Several security issues were fixed in libxml2.

Summary

Several security issues were fixed in libxml2.

Software Description:

- libxml2: GNOME XML library

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)

Topics Covered

security advisory moderate denial of service security issue Ubuntu libxml2 resource consumption

Update Instructions

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

Ubuntu 13.04:
  libxml2                         2.9.0+dfsg1-4ubuntu4.2

Ubuntu 12.10:
  libxml2                         2.8.0+dfsg1-5ubuntu2.3

Ubuntu 12.04 LTS:
  libxml2                         2.7.8.dfsg-5.1ubuntu4.5

Ubuntu 10.04 LTS:
  libxml2                         2.7.6.dfsg-1ubuntu1.9

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