Trend Deep Security must protect audit information from unauthorized modification.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-65889	TMDS-00-000095	SV-80379r1_rule		Medium

Description
If audit data were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit data, the information system and/or the application must protect audit information from unauthorized modification. This requirement can be achieved through multiple methods, which will depend upon system architecture and design. Some commonly employed methods include ensuring log files receive the proper file system permissions, and limiting log data locations. Applications providing a user interface to audit data will leverage user permissions and roles identifying the user accessing the data and the corresponding rights that the user enjoys in order to make access decisions regarding the modification of audit data. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity.

Description

If audit data were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit data, the information system and/or the application must protect audit information from unauthorized modification. This requirement can be achieved through multiple methods, which will depend upon system architecture and design. Some commonly employed methods include ensuring log files receive the proper file system permissions, and limiting log data locations. Applications providing a user interface to audit data will leverage user permissions and roles identifying the user accessing the data and the corresponding rights that the user enjoys in order to make access decisions regarding the modification of audit data. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity.

STIG	Date
Trend Micro Deep Security 9.x Security Technical Implementation Guide	2016-02-26

Details

Check Text ( C-66537r1_chk )
Review the Trend Deep Security server configuration to ensure audit information is protected from unauthorized modification. Interview the ISSO in order to identify all users and their permissions to the audit records. The ISSO must identify each user along with their assigned role configured for the appropriate information systems allowed. Verify the information gathered against the application's, "Computer and Group Rights" for each "Role" created along with the users assigned. If the information gathered does not match the settings within the application this is a finding.

Check Text ( C-66537r1_chk )

Review the Trend Deep Security server configuration to ensure audit information is protected from unauthorized modification.

Interview the ISSO in order to identify all users and their permissions to the audit records. The ISSO must identify each user along with their assigned role configured for the appropriate information systems allowed.

Verify the information gathered against the application's, "Computer and Group Rights" for each "Role" created along with the users assigned.

If the information gathered does not match the settings within the application this is a finding.

Fix Text (F-71965r1_fix)
Configure the Trend Deep Security server to protect audit information from unauthorized modification. Edit the audit permission according the local policy by modifying the roles under: Administration >> User Management >> Roles Select the applicable role. Click "Computer Rights" to modify user permissions. Next select “Other Rights” and modify accordingly.