Symantec Norton Anti-Virus for Exchange Fail-Open State DoS
Local Access Required
Denial of Service
Loss of Availability
Symantec Norton Antivirus for MS Exchange contains a flaw that may cause local denial of service by entering a "Fail-Open" state. The issue is triggered under unknown circumstances, and will result in loss of availability for the service.
Upgrade to version 2.01 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.