Applications using PyYAML could be made to crash if they received specially crafted input.
Stanisław Pitucha and Jonathan Gray discovered that PyYAML did not properly handle wrapped strings. An attacker could create specially crafted YAML data to trigger an assert, causing a denial of service.
12 January 2015
A security issue affects these releases of Ubuntu and its derivatives:
Applications using PyYAML could be made to crash if they received specially crafted input.
Stanisław Pitucha and Jonathan Gray discovered that PyYAML did not properly handle wrapped strings. An attacker could create specially crafted YAML data to trigger an assert, causing a denial of service.
The problem can be corrected by updating your system to the following package versions:
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 PyYAML to make all the necessary changes.
Vulmon