The remote host is missing an update to devil announced via advisory DSA 1717-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201717-1

Stefan Cornelius discovered a buffer overflow in devil, a cross-platform image loading and manipulation toolkit, which could be triggered via a crafted Radiance RGBE file. This could potentially lead to the execution of arbitrary code. For the stable distribution (etch), this problem has been fixed in version 1.6.7-5+etch1. For the testing distribution (lenny), this problem has been fixed in version 1.6.8-rc2-3+lenny1. For the unstable distribution (sid), this problem has been fixed in version 1.7.5-4. We recommend that you upgrade your devil package.