The strchr function in procmime.c in Claws Mail (aka claws-mail) 3.8.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted email. Per: http://cwe.mitre.org/data/definitions/476.html
"CWE-476: NULL Pointer Dereference"
Publication date: Tue, 23 Oct 2012 04:55:00 +0000