USN-2461-2: libyaml-libyaml-perl vulnerability

12 January 2015

libyaml-libyaml-perl vulnerability

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

  • Ubuntu 14.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


Applications using libyaml-libyaml-perl could be made to crash if they received specially crafted input.

Software Description

  • libyaml-libyaml-perl - Perl interface to libyaml, a YAML implementation


Stanisław Pitucha and Jonathan Gray discovered that libyaml-libyaml-perl 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
libyaml-libyaml-perl - 0.41-5ubuntu0.14.10.1
Ubuntu 14.04 LTS
libyaml-libyaml-perl - 0.41-5ubuntu0.14.04.1
Ubuntu 12.04 LTS
libyaml-libyaml-perl - 0.38-2ubuntu0.2

To update your system, please follow these instructions:

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