Ubuntu: 2143-1: cups-filters vulnerabilities
Posted by Benjamin D. Thomas   
Ubuntu cups-filters could be made to run programs as the lp user if it processed aspecially crafted file.
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Ubuntu Security Notice USN-2143-1
March 12, 2014

cups-filters vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

cups-filters could be made to run programs as the lp user if it processed a
specially crafted file.

Software Description:
- cups-filters: OpenPrinting CUPS Filters

Details:

Florian Weimer discovered that cups-filters incorrectly handled memory
in the urftopdf filter. An attacker could possibly use this issue to
execute arbitrary code with the privileges of the lp user. This issue only
affected Ubuntu 13.10. (CVE-2013-6473)

Florian Weimer discovered that cups-filters incorrectly handled memory
in the pdftoopvp filter. An attacker could possibly use this issue to
execute arbitrary code with the privileges of the lp user. (CVE-2013-6474,
CVE-2013-6475)

Florian Weimer discovered that cups-filters did not restrict driver
directories in in the pdftoopvp filter. An attacker could possibly use this
issue to execute arbitrary code with the privileges of the lp user.
(CVE-2013-6476)

Update instructions:

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

Ubuntu 13.10:
  cups-filters                    1.0.40-0ubuntu1.1

Ubuntu 12.10:
  cups-filters                    1.0.24-2ubuntu0.2

Ubuntu 12.04 LTS:
  cups-filters                    1.0.18-0ubuntu0.2

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

References:
  http://www.ubuntu.com/usn/usn-2143-1
  CVE-2013-6473, CVE-2013-6474, CVE-2013-6475, CVE-2013-6476

Package Information:
  https://launchpad.net/ubuntu/+source/cups-filters/1.0.40-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/cups-filters/1.0.24-2ubuntu0.2
  https://launchpad.net/ubuntu/+source/cups-filters/1.0.18-0ubuntu0.2