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Ubuntu Security Notice USN-2214-1

Ubuntu Security Notice USN-2214-1
Posted May 15, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2214-1 - Daniel Berrange discovered that libxml2 would incorrectly perform entity substitution even when requested not to. If a user or automated system were tricked into opening a specially crafted document, an attacker could possibly cause resource consumption, resulting in a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2014-0191
SHA-256 | 64ca427162a57b3fc78c8d1d6777e7a05d14345a9139d949bb434394a88f5e63

Ubuntu Security Notice USN-2214-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2214-1
May 15, 2014

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

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

- Ubuntu 14.04 LTS
- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

libxml2 could be made to consume resources if it processed a specially
crafted file.

Software Description:
- libxml2: GNOME XML library

Details:

Daniel Berrange discovered that libxml2 would incorrectly perform entity
substitution even when requested not to. If a user or automated system were
tricked into opening a specially crafted document, an attacker could
possibly cause resource consumption, resulting in a denial of service.

Update instructions:

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

Ubuntu 14.04 LTS:
libxml2 2.9.1+dfsg1-3ubuntu4.1

Ubuntu 13.10:
libxml2 2.9.1+dfsg1-3ubuntu2.1

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

Ubuntu 12.04 LTS:
libxml2 2.7.8.dfsg-5.1ubuntu4.7

Ubuntu 10.04 LTS:
libxml2 2.7.6.dfsg-1ubuntu1.11

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

References:
http://www.ubuntu.com/usn/usn-2214-1
CVE-2014-0191

Package Information:
https://launchpad.net/ubuntu/+source/libxml2/2.9.1+dfsg1-3ubuntu4.1
https://launchpad.net/ubuntu/+source/libxml2/2.9.1+dfsg1-3ubuntu2.1
https://launchpad.net/ubuntu/+source/libxml2/2.8.0+dfsg1-5ubuntu2.5
https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.7
https://launchpad.net/ubuntu/+source/libxml2/2.7.6.dfsg-1ubuntu1.11
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