src/racoon/handler.c in racoon in ipsec-tools does not remove an "orphaned ph1" (phase 1) handle when it has been initiated remotely, which allows remote attackers to cause a denial of service (resource consumption).
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10448
https://exchange.xforce.ibmcloud.com/vulnerabilities/44424
http://www.vupen.com/english/advisories/2009/1621
http://www.vupen.com/english/advisories/2009/1297
http://www.vupen.com/english/advisories/2008/2844
http://www.vupen.com/english/advisories/2008/2378
http://www.us-cert.gov/cas/techalerts/TA09-133A.html
http://www.ubuntu.com/usn/usn-641-1
http://www.securitytracker.com/id?1020692
http://www.securityfocus.com/bid/30657
http://www.redhat.com/support/errata/RHSA-2008-0849.html
http://www.mandriva.com/security/advisories?name=MDVSA-2008:181
http://support.apple.com/kb/HT3639
http://support.apple.com/kb/HT3549
http://security.gentoo.org/glsa/glsa-200812-03.xml
http://secunia.com/advisories/35074
http://secunia.com/advisories/32971
http://secunia.com/advisories/32759
http://secunia.com/advisories/31624
http://secunia.com/advisories/31478
http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
http://lists.apple.com/archives/security-announce/2009/Jun/msg00005.html