ubuntu-security-announce Digest, Vol 113, Issue 2

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Today's Topics:

1. [USN-2098-1] LibYAML vulnerability (Marc Deslauriers)


----------------------------------------------------------------------

Message: 1
Date: Tue, 04 Feb 2014 14:49:37 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-2098-1] LibYAML vulnerability
Message-ID: <52F14451.9070506@canonical.com>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-2098-1
February 04, 2014

libyaml vulnerability
==========================================================================

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

- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

LibYAML could be made to crash or run programs if it opened specially
crafted yaml document.

Software Description:
- libyaml: Fast YAML 1.1 parser and emitter library

Details:

Florian Weimer discovered that LibYAML incorrectly handled certain large
yaml documents. An attacker could use this issue to cause LibYAML to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 13.10:
libyaml-0-2 0.1.4-2ubuntu0.13.10.1

Ubuntu 12.10:
libyaml-0-2 0.1.4-2ubuntu0.12.10.1

Ubuntu 12.04 LTS:
libyaml-0-2 0.1.4-2ubuntu0.12.04.1

After a standard system update you need to restart applications using
LibYAML to make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2098-1
CVE-2013-6393

Package Information:
https://launchpad.net/ubuntu/+source/libyaml/0.1.4-2ubuntu0.13.10.1
https://launchpad.net/ubuntu/+source/libyaml/0.1.4-2ubuntu0.12.10.1
https://launchpad.net/ubuntu/+source/libyaml/0.1.4-2ubuntu0.12.04.1


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