Multiple stack-based buffer overflows in Novell eDirectory 8.8.x before 8.8.1 FTF1 and 8.x up to 8.7.3.8 and Novell NetMail before 3.52e FTF2 allow remote attackers to execute arbitrary code via (1) a long HTTP Host header which triggers an overflow in the BuildRedirectURL function; or vectors related to a username containing a . (dot) character in the (2) SMTP (3) POP (4) IMAP (5) HTTP or (6) Networked Messaging Application Protocol (NMAP) Netmail services.