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Ubuntu Security Notice USN-2461-3

Ubuntu Security Notice USN-2461-3
Posted Jan 13, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2461-3 - Stanislaw 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.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2014-9130
SHA-256 | 94388bafb691cbdc91477eab2a842c6ff957d642eb82cd9053ce4d95dff49efc

Ubuntu Security Notice USN-2461-3

Change Mirror Download
============================================================================
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:

Stanislaw 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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