USN-2293-1: CUPS vulnerability

Ubuntu Security Notice USN-2293-1

21st July, 2014

cups vulnerability

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

  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS

Summary

CUPS could be made to expose sensitive information, leading to privilege escalation.

Software description

  • cups - Common UNIX Printing System(tm)

Details

Francisco Alonso discovered that the CUPS web interface incorrectly
validated permissions on rss files. A local attacker could possibly use
this issue to bypass file permissions and read arbitrary files, possibly
leading to a privilege escalation.

Update instructions

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

Ubuntu 14.04 LTS:
cups 1.7.2-0ubuntu1.1
Ubuntu 12.04 LTS:
cups 1.5.3-0ubuntu8.4
Ubuntu 10.04 LTS:
cups 1.4.3-1ubuntu1.12

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References

CVE-2014-3537