Unknown vulnerability in the DNSd proxy, as used in Symantec Gateway Security 5400 2.x and 5300 1.x, Enterprise Firewall 7.0.x and 8.x, and VelociRaptor 1100/1200/1300 1.5, allows remote attackers to poison the DNS cache and redirect users to malicious sites.

Buffer overflow in Entrust LibKmp ISAKMP library, as used by Symantec Enterprise Firewall 7.0 through 8.0, Gateway Security 5300 1.0, Gateway Security 5400 2.0, and VelociRaptor 1.5, allows remote attackers to execute arbitrary code via a crafted ISAKMP payload.

Symantec Raptor Firewall 6.5 and 6.5.3, Enterprise Firewall 6.5.2 and 7.0, VelociRaptor Models 500/700/1000 and 1100/1200/1300, and Gateway Security 5110/5200/5300 generate easily predictable initial sequence numbers (ISN), which allows remote attackers to spoof connections.

Multiple buffer overflows in Symantec Raptor Firewall 6.5 and 6.5.3, Enterprise Firewall 6.5.2 and 7.0, VelociRaptor 500/700/1000 and 1100/1200/1300, and Gateway Security 5110/5200/5300 allow remote attackers to cause a denial of service (service termination) via (1) malformed RealAudio (rad) packets that are not properly handled by the RealAudio Proxy, or (2) crafted packets to the statistics service (statsd).

Memory leak in the (1) httpd, (2) nntpd, and (3) vpn driver in VelociRaptor 1.0 allows remote attackers to cause a denial of service (memory consumption) via an unknown method.

The web proxy component in Symantec Enterprise Firewall (SEF) 6.5.2 through 7.0, Raptor Firewall 6.5 and 6.5.3, VelociRaptor, and Symantec Gateway Security allow remote attackers to cause a denial of service (connection resource exhaustion) via multiple connection requests to domains whose DNS server is unresponsive or does not exist, which generates a long timeout.

FTP proxy in Symantec Raptor Firewall 6.5.3 and Enterprise 7.0 rewrites an FTP server's "FTP PORT" responses in a way that allows remote attackers to redirect FTP data connections to arbitrary ports, a variant of the "FTP bounce" vulnerability.