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Ubuntu Security Notice USN-1782-1

Ubuntu Security Notice USN-1782-1
Posted Mar 28, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1782-1 - It was discovered that libxml2 incorrectly handled XML entity expansion. An attacker could use this flaw to cause libxml2 to consume large amounts of resources, resulting in a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2013-0338
MD5 | 4fb039c63bf3b2f82997b99fbc7a8ae6

Ubuntu Security Notice USN-1782-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1782-1
March 28, 2013

libxml2 vulnerability
============================================================================

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

- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

libxml2 could be made to hang if it received specially crafted input.

Software Description:
- libxml2: GNOME XML library

Details:

It was discovered that libxml2 incorrectly handled XML entity expansion.
An attacker could use this flaw to cause libxml2 to consume large amounts
of resources, resulting in a denial of service.

Update instructions:

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

Ubuntu 12.10:
libxml2 2.8.0+dfsg1-5ubuntu2.2

Ubuntu 12.04 LTS:
libxml2 2.7.8.dfsg-5.1ubuntu4.4

Ubuntu 11.10:
libxml2 2.7.8.dfsg-4ubuntu0.6

Ubuntu 10.04 LTS:
libxml2 2.7.6.dfsg-1ubuntu1.8

Ubuntu 8.04 LTS:
libxml2 2.6.31.dfsg-2ubuntu1.12

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

References:
http://www.ubuntu.com/usn/usn-1782-1
CVE-2013-0338

Package Information:
https://launchpad.net/ubuntu/+source/libxml2/2.8.0+dfsg1-5ubuntu2.2
https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.4
https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-4ubuntu0.6
https://launchpad.net/ubuntu/+source/libxml2/2.7.6.dfsg-1ubuntu1.8
https://launchpad.net/ubuntu/+source/libxml2/2.6.31.dfsg-2ubuntu1.12
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