Title

System audit tool executables must have mode 0750 or less permissive. (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 file permissions. 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 has a file permissions greater than 0750, this is a finding.

Fix Text

As root, change the file permissions. # chmod 0750 <audit tool executable>

Additional Identifiers

Rule ID: SV-26512r2_rule

Vulnerability ID: V-22372

Group Title: GEN002717

Expert Comments

CCIs tied to check.

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