The remote host is missing an update to xpdf announced via advisory DSA 984-1. Derek Noonburg has fixed several potential vulnerabilities in xpdf, the Portable Document Format (PDF) suite. The old stable distribution (woody) does not seem to be affected.

For the stable distribution (sarge) these problems have been fixed in version 3.00-13.6. For the unstable distribution (sid) these problems have been fixed in version 3.01-7. We recommend that you upgrade your xpdf packages. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20984-1