The remote host is missing an update to the system as announced in the referenced advisory.
The following package is affected: libspf2
CVE-2008-2469 Heap-based buffer overflow in the SPF_dns_resolv_lookup function in Spf_dns_resolv.c in libspf2 before 1.2.8 allows remote attackers to execute arbitrary code via a long DNS TXT record with a modified length field.
Solution: Update your system with the appropriate patches or software upgrades.