The remote host is missing an update to dropbear announced via advisory DSA 923-1. A buffer overflow has been discovered in dropbear, a lightweight SSH2 server and client, that may allow authenticated users to execute arbitrary code as the server user (usually root). The old stable distribution (woody) does not contain dropbear packages.

For the stable distribution (sarge) this problem has been fixed in version 0.45-2sarge0. For the unstable distribution (sid) this problem has been fixed in version 0.47-1. We recommend that you upgrade your dropbear package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20923-1