Michael Brooks discovered that ctorrent, a text-mode bittorrent client, does not verify the length of file paths in torrent files. An attacker can exploit this via a crafted torrent that contains a long file path to execute arbitrary code with the rights of the user opening the file. The oldstable distribution does not contain ctorrent. For the stable distribution , this problem has been fixed in version 1.3.4-dnh3.2-1+lenny1. For the testing distribution , this problem will be fixed soon. For the unstable distribution , this problem has been fixed in version 1.3.4-dnh3.2-1.1. We recommend that you upgrade your ctorrent packages.