[USN-1904-1] libxml2 vulnerabilities

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
Comment: Using GnuPG with undefined - http://www.enigmail.net/
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=MXtX
-----END PGP SIGNATURE-----
==========================================================================
Ubuntu Security Notice USN-1904-1
July 15, 2013

libxml2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

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)

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.

References:
http://www.ubuntu.com/usn/usn-1904-1
CVE-2013-0339, CVE-2013-2877

Package Information:
https://launchpad.net/ubuntu/+source/libxml2/2.9.0+dfsg1-4ubuntu4.2
https://launchpad.net/ubuntu/+source/libxml2/2.8.0+dfsg1-5ubuntu2.3
https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.5
https://launchpad.net/ubuntu/+source/libxml2/2.7.6.dfsg-1ubuntu1.9