The remote host is missing an update to kronolith announced via advisory DSA 970-1. Johannes Greil of SEC Consult discovered several cross-site scripting vulnerabilities in kronolith, the Horde calendar application. The old stable distribution (woody) does not contain kronolith packages.

For the stable distribution (sarge) these problems have been fixed in version 1.1.4-2sarge1. For the unstable distribution (sid) these problems have been fixed in version 2.0.6-1 of kronolith2. We recommend that you upgrade your kronolith and kronolith2 packages. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20970-1