The remote host is missing an update to the system as announced in the referenced advisory.
The following packages are affected: imlib2 imlib2-nox11
CVE-2008-5187 The load function in the XPM loader for imlib2 1.4.2, and possibly other versions, allows attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted XPM file that triggers a 'pointer arithmetic error' and a heap-based buffer overflow, a different vulnerability than CVE-2008-2426. NOTE: the provenance of this information is unknown the details are obtained solely from third party information.
Solution: Update your system with the appropriate patches or software upgrades.