Off-by-one error in Pegasus Mail 4.21a through 4.21c and 4.30PB1 allows remote attackers to execute arbitrary code via a long email message header, which triggers a one-byte buffer overflow.Referenceshttp://secunia.com/secunia_research/2005-61/advisory/http://www.securityfocus.com/archive/1/419908/100/0/threadedhttp://securitytracker.com/id?1015385http://secunia.com/advisories/17992http://www.securityfocus.com/bid/15973http://www.osvdb.org/21843http://www.pmail.com/newsflash.htm#secunia
