The remote host is missing an update to moodle announced via advisory DSA 1691-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201691-1

Several remote vulnerabilities have been discovered in Moodle, an online course management system. The following issues are addressed in this update, ranging from cross site scripting to remote code execution. Various cross site scripting issues in the Moodle codebase (CVE-2008-3326, CVE-2008-3325, CVE-2007-3555, CVE-2008-5432, MSA-08-0021, MDL-8849, MDL-12793, MDL-11414, MDL-14806, MDL-10276). Various cross site request forgery issues in the Moodle codebase (CVE-2008-3325, MSA-08-0023). Privilege escalation bugs in the Moodle codebase (MSA-08-0001, MDL-7755). SQL injection issue in the hotpot module (MSA-08-0010). An embedded copy of Smarty had several vulnerabilities (CVE-2008-4811, CVE-2008-4810). An embedded copy of Snoopy was vulnerable to cross site scripting (CVE-2008-4796). An embedded copy of Kses was vulnerable to cross site scripting (CVE-2008-1502). For the stable distribution (etch), these problems have been fixed in version 1.6.3-2+etch1. For the unstable distribution (sid), these problems have been fixed in version 1.8.2.dfsg-2. We recommend that you upgrade your moodle (1.6.3-2+etch1) package.