Details

Multipurpose Internet Mail Extensions (MIME) encoded files can be crafted to hide a malicious payload. When the MIME encoded file is presented to software that decodes the MIME encoded files, such as an email client, the malware is released. Scanning these files as part of the regularly scheduled scan tasks will mitigate this risk.

Solution

From the ePO server console System Tree, select the Systems tab, select the asset to be checked, select Actions, select Agent, and select Modify Tasks on a Single System. From the list of available tasks in the Task Name column, with the assistance of the ePO SA, identify the weekly on demand client scan task. In the same row as the client scan task under review, under the Task Type column, ensure it is an ‘On Demand scan’ and in the Status column, ensure that the status is ‘Enabled’. In the Task Name column, select the weekly on demand task. Under the Scan Items tab, locate the ‘Options:’ label. Select the ‘Decode MIME encoded files’ option. Select Save.

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_McAfee_VirusScan88_Managed_Client_V5R21_STIG.ziphttps://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_McAfee_VirusScan88_Managed_Client_V5R21_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: System and Information Integrity.This control applies to the following type of system Windows.

References

• 800-53|SI-3c.1.
• CAT|II
• CCI|CCI-001241
• Rule-ID|SV-55197r3_rule
• STIG-ID|DTAM053
• Vuln-ID|V-6612

Source

• Tenable.com/audits