McAfee VirusScan On-Access General Policies must be configured to not exclude any URL scripts from being scanned unless the URL exclusions have been documented with, and approved by, the ISSO/ISSM/DAA.

From McAfee VirusScan 8.8 Managed Client STIG

Part of DTAM160-McAfee VirusScan on-access URL exclusions

Associated with: CCI-001242

SV-55267r3_rule McAfee VirusScan On-Access General Policies must be configured to not exclude any URL scripts from being scanned unless the URL exclusions have been documented with, and approved by, the ISSO/ISSM/DAA.

Vulnerability discussion

Many attackers use toolkits containing several different types of utilities and scripts that can be used to probe and attack hosts. Scripts are a common carrier of malware and none should be excluded from scanning. In the unlikely event that excluding scanning a script impacts the operational function and/or availability of a system, and reasonable mitigation efforts have been put into place, the exclusion may be put into place but must be documented with, and approved by, the ISSO/ISSM/DAA.

Check content

From the ePO server console System Tree, select the Systems tab, select the asset to be checked, select Actions, select Agent, and select Modify Policies on a Single System. From the product pull down list, select VirusScan Enterprise 8.8.0. Select from the Policy column the policy associated with the On-Access General Policies. Under the ScriptScan tab, locate the "ScriptScan exclusions:" label. Ensure there are no exclusions listed in the URL field. Criteria: If there are no exclusions listed in the URL field, this is a not finding. If there are exclusions listed in the URL field, and the exclusions have been documented with, and approved by, the ISSO/ISSM/DAA, this is not a finding. If there are exclusions listed in the URL field, and the exclusions have not been documented with, and approved by, the ISSO/ISSM/DAA, this is a finding. On the client machine, use the Windows Registry Editor to navigate to the following key: HKLM\Software\McAfee\ (32-bit) HKLM\Software\Wow6432Node\McAfee\ (64-bit) SystemCore\VSCore\Script Scanner Criteria: If the ExcludedURLs REG_MULTI_SZ has any entries, and the excluded URLs have not been documented with, and approved by, the ISSO/ISSM/DAA, this is a finding.

Fix text

From the ePO server console System Tree, select the Systems tab, select the asset to be checked, select Actions, select Agent, and select Modify Policies on a Single System. From the product pull down list, select VirusScan Enterprise 8.8.0. Select from the Policy column the policy associated with the On-Access General Policies. Under the ScriptScan tab, locate the "ScriptScan exclusions" label. Remove any exclusions listed in the URL field.

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