Gaël Delalleau discovered a buffer overflow in the handling of the LINEMODE suboptions in telnet clients. Heimdal, a free implementation of Kerberos 5, also contains such a client. This can lead to the execution of arbitrary code when connected to a malicious server.
For the old stable distribution (woody) this problem has been fixed in version 0.4e-7.woody.11.
For the stable distribution (sarge) this problem has been fixed in version 0.6.3-10.
For the unstable distribution (sid) this problem has been fixed in version 0.6.3-10.
We recommend that you upgrade your heimdal package.
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
You may use an automated update by adding the resources from the footer to the proper configuration.
Debian GNU/Linux 3.0 alias woody --------------------------------