The remote host is missing an update to graphicsmagick announced via advisory DSA 1903-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201903-1

Several vulnerabilities have been discovered in graphicsmagick, a collection of image processing tool, which can lead to the execution of arbitrary code, exposure of sensitive information or cause DoS. For details on the issuess addressed, please visit the referenced security advisories. For the oldstable distribution (etch), these problems have been fixed in version 1.1.7-13+etch1. For the stable distribution (lenny), these problems have been fixed in version 1.1.11-3.2+lenny1. For the upcoming stable distribution (squeeze) and the unstable distribution ion (sid), these problems have been fixed in version 1.3.5-5.1. We recommend that you upgrade your graphicsmagick packages.