The remote host is missing an update to libcrypt-cbc-perl announced via advisory DSA 996-1. Lincoln Stein discovered that the Perl Crypt::CBC module produces weak ciphertext when used with block encryption algorithms with blocksize > 8 bytes. The old stable distribution (woody) does not contain a Crypt::CBC module.

For the stable distribution (sarge) this problem has been fixed in version 2.12-1sarge1. For the unstable distribution (sid) this problem has been fixed in version 2.17-1. We recommend that you upgrade your libcrypt-cbc-perl package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20996-1