The remote host is missing an update to zoo announced via advisory DSA 991-1. Jean-Sebastien Guay-Leroux discovered a buffer overflow in zoo, a utility to manipulate zoo archives, that could lead to the execution of arbitrary code when unpacking a specially crafted zoo archive. For the old stable distribution (woody) this problem has been fixed in version 2.10-9woody0.

For the stable distribution (sarge) this problem has been fixed in version 2.10-11sarge0. For the unstable distribution (sid) this problem has been fixed in version 2.10-17. We recommend that you upgrade your zoo package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20991-1