Apache SpamAssassin 3.0.1, 3.0.2, and 3.0.3 allows remote attackers to cause a denial of service (CPU consumption and slowdown) via a message with a long Content-Type header without any boundaries.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10901
http://www.vuxml.org/freebsd/cc4ce06b-e01c-11d9-a8bd-000cf18bbe54.html
http://www.securityfocus.com/bid/13978
http://www.redhat.com/support/errata/RHSA-2005-498.html
http://www.mandriva.com/security/advisories?name=MDKSA-2005:106
http://www.debian.org/security/2005/dsa-736