Buffer overflow in ISS BlackICE Defender 2.9 and earlier, BlackICE Agent 3.0 and 3.1, and RealSecure Server Sensor 6.0.1 and 6.5 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a flood of large ICMP ping packets.

Multiple stack-based buffer overflows in the ICQ parsing routines of the ISS Protocol Analysis Module (PAM) component, as used in various RealSecure, Proventia, and BlackICE products, allow remote attackers to execute arbitrary code via a SRVMULTI response containing a SRVUSERONLINE response packet and a SRVMETAUSER response packet with long (1) nickname, (2) firstname, (3) lastname, or (4) email address fields, as exploited by the Witty worm.