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Ubuntu Security Notice USN-2461-3
January 12, 2015
pyyaml 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 PyYAML could be made to crash if they received
specially crafted input.
Software Description:
– pyyaml: YAML parser and emitter for Python
Details:
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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.10:
python-yaml 3.11-1ubuntu0.1
python3-yaml 3.11-1ubuntu0.1
Ubuntu 14.04 LTS:
python-yaml 3.10-4ubuntu0.1
python3-yaml 3.10-4ubuntu0.1
Ubuntu 12.04 LTS:
python-yaml 3.10-2ubuntu0.1
python3-yaml 3.10-2ubuntu0.1
After a standard system update you need to restart applications using
PyYAML to make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2461-3
CVE-2014-9130
Package Information:
https://launchpad.net/ubuntu/+source/pyyaml/3.11-1ubuntu0.1
https://launchpad.net/ubuntu/+source/pyyaml/3.10-4ubuntu0.1
https://launchpad.net/ubuntu/+source/pyyaml/3.10-2ubuntu0.1
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