The remote host is missing an update to micq announced via advisory DSA 211-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20211-1

Rüdiger Kuhlmann, upstream developer of mICQ, a text based ICQ client, discovered a problem in mICQ. Receiving certain ICQ message types that do not contain the required 0xFE seperator causes all versions to crash. For the current stable distribution (woody) this problem has been fixed in version 0.4.9-0woody3. For the old stable distribution (potato) this problem has been fixed in version 0.4.3-4.1. For the current unstable distribution (sid) this problem has been fixed in version 0.4.9.1-1. We recommend that you upgrade your micq package.