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.
https://www.exploit-db.com/exploits/6805
https://exchange.xforce.ibmcloud.com/vulnerabilities/46055
https://bugs.launchpad.net/ubuntu/feisty/+source/libspf2/+bug/271025
https://answers.launchpad.net/ubuntu/gutsy/+source/libspf2/1.2.5.dfsg-4ubuntu0.7.10.1
http://www.vupen.com/english/advisories/2008/2896
http://www.kb.cert.org/vuls/id/183657
http://www.doxpara.com/?page_id=1256
http://www.doxpara.com/?p=1263
http://www.debian.org/security/2008/dsa-1659
http://up2date.astaro.com/2008/11/up2date_7305_released.html
http://securityreason.com/securityalert/4487
http://security.gentoo.org/glsa/glsa-200810-03.xml
http://secunia.com/advisories/32720
http://secunia.com/advisories/32496
http://secunia.com/advisories/32450
http://secunia.com/advisories/32396
http://bugs.gentoo.org/show_bug.cgi?format=multiple&id=242254