USN-3132-1: tar vulnerability

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 14.04 LTS

Description

Harry Sintonen discovered that tar incorrectly handled extracting files when path names are specified on the command line. If a user or automated system were tricked into processing a specially crafted archive, an attacker could possibly overwrite arbitrary files.

Affected Products and Versions

_Severity is medium unless otherwise noted.
_

• Cloud Foundry BOSH stemcells are vulnerable, including:
  • All versions prior to 3151.5
  • 3233.x versions prior to 3233.6
  • 3263.x versions prior to 3263.12
  • 3312.x versions prior to 3312.7
  • All other versions
• All versions of Cloud Foundry cflinuxfs2 prior to v.1.92.0

Mitigation

Users of affected versions should apply the following mitigation:

• The Cloud Foundry team recommends upgrading to the following BOSH stemcells:
  • Upgrade all lower versions of 3151.x to version 3151.5
  • Upgrade all lower versions of 3233.x to version 3233.6
  • Upgrade all lower versions of 3263.x to version 3263.12
  • Upgrade all lower versions of 3312.x to version 3312.7

The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs2 v.1.92.0 or later versions

Credit

Harry Sintonen

References

• <https://www.ubuntu.com/usn/usn-3132-1/&gt;
• <http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-6321&gt;