The proxy DNS service in Symantec Gateway Security (SGS) allows remote attackers to make arbitrary DNS queries to third-party DNS servers, while hiding the source IP address of the attacker. NOTE: another researcher has stated that the default configuration does not proxy DNS queries received on the external interface

The DNS proxy (DNSd) for multiple Symantec Gateway Security products allows remote attackers to poison the DNS cache via a malicious DNS server query response that contains authoritative or additional records.