Debian Security Advisory

DSA-2435-1 gnash -- several vulnerabilities

Date Reported:
19 Mar 2012
Affected Packages:
gnash
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 605419, Bug 649384, Bug 664023.
In Mitre's CVE dictionary: CVE-2010-4337, CVE-2011-4328, CVE-2012-1175.
More information:

Several vulnerabilities have been identified in Gnash, the GNU Flash player.

  • CVE-2012-1175

    Tielei Wang from Georgia Tech Information Security Center discovered a vulnerability in GNU Gnash which is caused due to an integer overflow error and can be exploited to cause a heap-based buffer overflow by tricking a user into opening a specially crafted SWF file.

  • CVE-2011-4328

    Alexander Kurtz discovered an unsafe management of HTTP cookies. Cookie files are stored under /tmp and have predictable names, and the vulnerability allows a local attacker to overwrite arbitrary files the users has write permissions for, and are also world-readable which may cause information leak.

  • CVE-2010-4337

    Jakub Wilk discovered an unsafe management of temporary files during the build process. Files are stored under /tmp and have predictable names, and the vulnerability allows a local attacker to overwrite arbitrary files the users has write permissions for.

For the stable distribution (squeeze), this problem has been fixed in version 0.8.8-5+squeeze1.

For the unstable distribution (sid), this problem has been fixed in version 0.8.10-5.

We recommend that you upgrade your gnash packages.