The McAfee VirusScan Enterprise for Linux 1.9.x/2.0.x On-Demand scanner must be configured to decode MIME encoded files.

From McAfee VSEL 1.9/2.0 Local Client Security Technical Implementation Guide

Part of SRG-APP-000277

Associated with: CCI-001241

SV-77621r1_rule The McAfee VirusScan Enterprise for Linux 1.9.x/2.0.x On-Demand scanner must be configured to decode MIME encoded files.

Vulnerability discussion

Malware is often packaged within an archive. In addition, archives might have other archives within. Not scanning archive files introduces the risk of infected files being introduced into the environment.

Check content

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, review tasks under "View", "Scheduled Tasks". With the System Administrator's assistance, determine which task is intended as the regularly scheduled scan task. Click on the task, and then click "Modify". Under "2. What to Scan", click "Next". Under "3. Choose Scan Settings", "Anti-virus Scanning Options", verify the "Decode MIME encoded files" check box has been selected. If the "Decode MIME encoded files" check box has not been 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 "nailsd.profile.ODS.mime" ods.cfg" If the response given for "nailsd.profile.ODS.mime" is not "true", this is a finding.

Fix text

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, review tasks under "View", "Scheduled Tasks". With the System Administrator's assistance, determine which task is intended as the regularly scheduled scan task. Click on the task, and then click "Modify". Under "2. What to Scan", click "Next". Under "3. Choose Scan Settings", "Anti-virus Scanning Options", select the "Decode MIME encoded files" check box, click "Next", and then click "Finish".

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