gnash -- several vulnerabilities

2012-03-19T00:00:00
ID DSA-2435
Type debian
Reporter Debian
Modified 2012-03-19T00:00:00

Description

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

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.

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.

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.