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USN-2461-1: LibYAML vulnerability

12 January 2015

Applications using LibYAML could be made to crash if they received specially crafted input.



  • libyaml - Fast YAML 1.1 parser and emitter library


Stanisław Pitucha and Jonathan Gray discovered that LibYAML did not
properly handle wrapped strings. An attacker could create specially
crafted YAML data to trigger an assert, causing a denial of service.

Update instructions

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

Ubuntu 14.10
Ubuntu 14.04
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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