Title

System audit tool executables must be group-owned by root, bin, sys, or other. (Cat III impact)

Discussion

To prevent unauthorized access or manipulation of system audit logs, the tools for manipulating those logs must be protected.

Check Content

Verify the audit tools are group-owned by root, bin, sys, or other. The list of files should minimally include the following: audevent - Change/display event/system call status. audfilter - Load/clear/display the audit filtering policy. auditdp - Selectively read/write and convert/format the audit data. audisp - Display audit records. audomon - Audit file monitoring and size parameter setpoints. audsys - Start/stop auditing; set/display the audit file or directory information. userdbset - Select user to be audited. # ls -lL /usr/sbin/aud* /usr/sbin/userdb* If any system audit tool is not group-owned by root, bin, sys, or other, this is a finding.

Fix Text

As root, change the file group ownership. # chgrp root <audit_tool_filename>

Additional Identifiers

Rule ID: SV-26509r2_rule

Vulnerability ID: V-22371

Group Title: GEN002716

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.