The McAfee VirusScan Enterprise for Linux 1.9.x/2.0.x On-Access scanner must be configured to decompress archives when scanning.

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

Part of SRG-APP-000279

Associated with: CCI-001243

SV-77567r1_rule The McAfee VirusScan Enterprise for Linux 1.9.x/2.0.x On-Access scanner must be configured to decompress archives when scanning.

Vulnerability discussion

Malware can be hidden within archived files and passed from system to system undetected unless the archive is decompressed and each file scanned. By disabling the archive scanning capability, archives such as .tar and .tgz files will not be decompressed and any infected files in the archives would go undetected. Decompression can slow performance, however; any virus-infected file inside an archive cannot become active until it has been extracted. Recognizing the slow performance potential

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, under "Configure", select "On-Access Settings". Under "Anti-virus Scanning Options", verify the "Decompress archives" check box is selected. If the check box "Decompress archives" is not selected, this is a finding. If the check box for "Decompress archives" is not selected but the On-Demand scan decompress of archives is configured in the regularly scheduled scan, as specified in STIG ID DTAVSEL-101, this is a finding and severity of this can be dropped to a CAT 3. 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 "decompArchive" nailsd.cfg" If the response given includes "nailsd.profile.OAS.decompArchive: false" or includes "nailsd.profile.OAS.decompArchive: true" with a preceding #, 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, under "Configure", select "On-Access Settings". Under "Anti-virus Scanning Options", select the "Decompress archives" check box. Click "Apply".

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.

Powered by sagemincer