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USN-2160-1: LibYAML vulnerability

3 April 2014

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



  • libyaml - Fast YAML 1.1 parser and emitter library


Ivan Fratric discovered that LibYAML incorrectly handled certain malformed
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
Ubuntu 12.10
Ubuntu 12.04

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


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