Ubuntu Security Notice USN-2461-1
12th January, 2015
libyaml vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Applications using LibYAML could be made to crash if they received
specially crafted input.
Software description
- libyaml
– Fast YAML 1.1 parser and emitter library
Details
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 version:
- Ubuntu 14.10:
-
libyaml-0-2
0.1.6-1ubuntu0.1
- Ubuntu 14.04 LTS:
-
libyaml-0-2
0.1.4-3ubuntu3.1
- Ubuntu 12.04 LTS:
-
libyaml-0-2
0.1.4-2ubuntu0.12.04.4
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart applications using
LibYAML to make all the necessary changes.