Joel Eriksson discovered a format string vulnerability in telnetd-ssl
which may be able to lead to the execution of arbitrary code on the
victims machine.
For the stable distribution (woody) this problem has been fixed in
version 0.17.17+0.1-2woody3.
For the unstable distribution (sid) this problem has been fixed in
version 0.17.24+0.1-6.
We recommend that you upgrade your telnetd-ssl package immediately.