The remote host is missing an update to the system as announced in the referenced advisory.
The following package is affected: clamav
CVE-2008-0318 Integer overflow in libclamav in ClamAV before 0.92.1, as used in clamd, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted Petite packed PE file, which triggers a heap-based buffer overflow.
Solution: Update your system with the appropriate patches or software upgrades.