The McAfee VirusScan Enterprise for Linux 1.9.x/2.0.x On-Access scanner must be configured to scan files when being written to disk.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63085	DTAVSEL-008	SV-77575r1_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 written to 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	2020-03-24

Details

Check Text ( C-63837r1_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 Scanning Options", verify the "Scan files when writing to disk" check box is selected. If the check box "Scan files when writing to disk" is not selected, 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 "scanOnWrite" nailsd.cfg" If the response given is "nailsd.profile.OAS.scanOnWrite: false" or is "nailsd.profile.OAS.scanOnWrite: true" with a preceding #, this is a finding.

Check Text ( C-63837r1_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 Scanning Options", verify the "Scan files when writing to disk" check box is selected.

If the check box "Scan files when writing to disk" is not selected, 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 "scanOnWrite" nailsd.cfg"

If the response given is "nailsd.profile.OAS.scanOnWrite: false" or is "nailsd.profile.OAS.scanOnWrite: true" with a preceding #, this is a finding.

Fix Text (F-69003r1_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 Scanning Options", select the "Scan files when writing to disk" check box. Click "Apply".