McAfee VirusScan On-Demand scan must be configured to decode MIME encoded files.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-6612	DTAM053	SV-55197r1_rule		Medium

Description
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.

STIG	Date
McAfee VirusScan 8.8 Managed Client STIG	2017-07-05

Details

Check Text ( C-48800r2_chk )
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 Actions column, select "Edit Assignment". In the Task to Schedule: area, verify the Product is "VirusScan Enterprise 8.8.0" and the Task Type is "On Demand Scan". In the Task name column, select "View Selected Task". Under the Scan Items tab, locate the "Options:" label. Ensure the "Decode MIME encoded files" option is selected. Criteria: If "Decode MIME encoded files" is selected, this is not a finding. On the client machine, use the Windows Explorer to navigate to the following folder: %SystemDrive%\Documents and Settings\All Users\Application Data\McAfee\Common Framework\Task (32-Bit) %SystemDrive%\ProgramData\McAfee\Common Framework\Task (64-Bit) Multiple .ini files will be stored in this folder, one for each task defined on the ePO server for this client. The name for each task is identified in the first section of the file under the [Task] section on the TaskName= "" line. Additionally, a TaskType= line is provided to describe the type of scan. In this case, TaskType=VSC700_Scan_Task is expected. Information for this check is determined by examining the contents of this file. Criteria: If [What] ScanMIME=1, this is not a finding.

Check Text ( C-48800r2_chk )

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 Actions column, select "Edit Assignment". In the Task to Schedule: area, verify the Product is "VirusScan Enterprise 8.8.0" and the Task Type is "On Demand Scan". In the Task name column, select "View Selected Task". Under the Scan Items tab, locate the "Options:" label. Ensure the "Decode MIME encoded files" option is selected.

Criteria: If "Decode MIME encoded files" is selected, this is not a finding.

On the client machine, use the Windows Explorer to navigate to the following folder:
%SystemDrive%\Documents and Settings\All Users\Application Data\McAfee\Common Framework\Task (32-Bit)
%SystemDrive%\ProgramData\McAfee\Common Framework\Task (64-Bit)
Multiple .ini files will be stored in this folder, one for each task defined on the ePO server for this client. The name for each task is identified in the first section of the file under the [Task] section on the TaskName= "" line. Additionally, a TaskType= line is provided to describe the type of scan. In this case, TaskType=VSC700_Scan_Task is expected. Information for this check is determined by examining the contents of this file.

Criteria: If [What] ScanMIME=1, this is not a finding.

Fix Text (F-48051r2_fix)
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.

Fix Text (F-48051r2_fix)