Eric Romang discovered that centericq, a text-mode multi-protocol instant messenger client, creates some temporary files with predictable filenames and is hence vulnerable to symlink attacks by local attackers.
The old stable distribution (woody) is not affected by this problem.
For the stable distribution (sarge) this problem has been fixed in version 4.20.0-1sarge1.
For the unstable distribution (sid) this problem has been fixed in version 4.20.0-7.
We recommend that you upgrade your centericq package.