The remote host is missing an update to freeciv announced via advisory DSA 1142-1. Luigi Auriemma discovered missing boundary checks in freeciv, a clone of the well known Civilisation game, which can be exploited by remote attackers to cause a denial of service (crash) and possibly execute arbitrary code.

For the stable distribution (sarge) these problems have been fixed in version 2.0.1-1sarge2. For the unstable distribution (sid) these problems will be fixed soon. We recommend that you upgrade your freeciv package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201142-1