The remote host is missing an update to pywebdav announced via advisory DSA 2177-1.

The oldstable distribution (lenny) does not contain a python-webdav package. For the stable distribution (squeeze), this problem has been fixed in version 0.9.4-1+squeeze1. For the testing distribution (wheezy) and the unstable distribution (sid), this problem has been fixed in version 0.9.4-3. We recommend that you upgrade your python-webdav packages. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202177-1

It was discovered that python-webdav, a WebDAV server implementation, contains several SQL injection vulnerabilities in the processing of user credentials.