USN-2161-1: libyaml-libyaml-perl vulnerabilities

Ubuntu Security Notice USN-2161-1

3rd April, 2014

libyaml-libyaml-perl vulnerabilities

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

  • Ubuntu 13.10
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS

Summary

libyaml-libyaml-perl could be made to crash or run programs if it opened a specially crafted YAML file.

Software description

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

Details

Florian Weimer discovered that libyaml-libyaml-perl incorrectly handled
certain large YAML documents. An attacker could use this issue to cause
libyaml-libyaml-perl to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2013-6393)

Ivan Fratric discovered that libyaml-libyaml-perl incorrectly handled
certain malformed YAML documents. An attacker could use this issue to cause
libyaml-libyaml-perl to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2014-2525)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 13.10:
libyaml-libyaml-perl 0.38-3ubuntu0.13.10.1
Ubuntu 12.10:
libyaml-libyaml-perl 0.38-3ubuntu0.12.10.1
Ubuntu 12.04 LTS:
libyaml-libyaml-perl 0.38-2ubuntu0.1

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-libyaml-perl to make all the necessary changes.

References

CVE-2013-6393, CVE-2014-2525