Network Associates Virusscan

NAI VirusScan NT 4.0.2 does not properly modify the scan.dat virus definition file during an update via FTP, but it reports that the update was successful, which could cause a system administrator to believe that the definitions have been updated correctly.

The default installation of VirusScan 4.5 and NetShield 4.5 has insecure permissions for the registry key that identifies the AutoUpgrade directory, which allows local users to execute arbitrary commands by replacing SETUP.EXE in that directory with a Trojan Horse.