Debian 5.0 DSA-1817-1 Critical: Ctorrent Buffer Overflow Risk

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 (etch) does not contain ctorrent.

For the stable distribution (lenny), this problem has been fixed in
version 1.3.4-dnh3.2-1+lenny1.

For the testing distribution (squeeze), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in
version 1.3.4-dnh3.2-1.1.


We recommend that you upgrade your ctorrent packages.

Upgrade instructions
- --------------------

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

...