The McAfee VirusScan Enterprise for Linux 1.9.x/2.0.x On-Access scanner must be configured to deny access to the file if an error occurs during scanning.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63103	DTAVSEL-017	SV-77593r1_rule		Medium

Description
Anti-virus software is the most commonly used technical control for malware threat mitigation. Real-time scanning of files as they are read from disk is a crucial first line of defense from malware attacks.

STIG	Date
McAfee VSEL 1.9/2.0 Local Client Security Technical Implementation Guide	2015-11-30

Details

Check Text ( C-63855r1_chk )
From a desktop browser window, connect to the McAfee VirusScan Enterprise for Linux (VSEL) Monitor (WEB interface) of the Linux system being reviewed and logon with the nails user account. In the VSEL WEB Monitor, under "Configure", select "On-Access Settings". Under "Anti-virus Actions", verify the "Block" radio button is selected for "Action if an error occurs during scanning". If the "Block" radio button is not selected for "Action if an error occurs during scanning", this is a finding. To validate without the Web interface, access the Linux system being reviewed, either at the console or by a SSH connection. At the command line, navigate to /var/opt/NAI/LinuxShield/etc. Enter the command "grep "ScanAction" nailsd.cfg -A 5" nailsd.cfg" If the response given for "nailsd.profile.OAS.action.error" is not "Block", this is a finding.

Check Text ( C-63855r1_chk )

From a desktop browser window, connect to the McAfee VirusScan Enterprise for Linux (VSEL) Monitor (WEB interface) of the Linux system being reviewed and logon with the nails user account.

In the VSEL WEB Monitor, under "Configure", select "On-Access Settings".
Under "Anti-virus Actions", verify the "Block" radio button is selected for "Action if an error occurs during scanning".

If the "Block" radio button is not selected for "Action if an error occurs during scanning", this is a finding.

To validate without the Web interface, access the Linux system being reviewed, either at the console or by a SSH connection.
At the command line, navigate to /var/opt/NAI/LinuxShield/etc.
Enter the command "grep "ScanAction" nailsd.cfg -A 5" nailsd.cfg"

If the response given for "nailsd.profile.OAS.action.error" is not "Block", this is a finding.

Fix Text (F-69021r1_fix)
From a desktop browser window, connect to the McAfee VirusScan Enterprise for Linux (VSEL) Monitor (WEB interface) of the Linux system being reviewed and logon with the nails user account. In the VSEL WEB Monitor, under "Configure", select "On-Access Settings". Under "Anti-virus Actions", select the "Block" radio button for "Action if an error occurs during scanning". Click "Apply".