The remote host is missing an update to sork-passwd-h3 announced via advisory DSA 1829-2.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201829-2

The previous update introduced a regression in main.php, causing the module to fail. This update corrects the flaw. . For reference the original advisory text is below. It was discovered that sork-passwd-h3, a Horde3 module for users to change their password, is prone to a cross-site scripting attack via the backend parameter. For the oldstable distribution (etch), this problem has been fixed in version 3.0-2+etch2. For the stable distribution (lenny), this problem has been fixed in version 3.0-2+lenny2. For the testing distribution (squeeze), this problem will be fixed soon. For the unstable distribution (sid), this problem has been fixed in version 3.1-1.2. We recommend that you upgrade your sork-passwd-h3 packages.