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Ubuntu Security Notice USN-2098-1

Ubuntu Security Notice USN-2098-1
Posted Feb 4, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2098-1 - 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.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2013-6393
MD5 | cd079ff287b56169602f2067e0d08f11

Ubuntu Security Notice USN-2098-1

Change Mirror Download
==========================================================================
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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