The remote host is missing an update to graphviz announced via advisory DSA 857-1. Javier Fernandez-Sanguino Pena discovered insecure tmporary file creation in graphviz, a rich set of graph drawing tools, that can be exploited to overwrite arbitrary files by a local attacker. For the old stable distribution (woody) this problem probably persists but the package is non-free.

For the stable distribution (sarge) this problem has been fixed in version 2.2.1-1sarge1. For the unstable distribution (sid) this problem has been fixed in version 2.2.1-1sarge1. We recommend that you upgrade your graphviz package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20857-1