Title

All system command files must not have extended ACLs. (Cat II impact)

Discussion

Restricting permissions will protect system command files from unauthorized modification. System command files include files present in directories used by the operating system for storing default system executables and files present in directories included in the system's default executable search paths.

Check Content

Verify all system command files have no extended ACLs by running the following commands: # aclget /etc # aclget /bin # aclget /usr/bin # aclget /usr/lbin # aclget /usr/ucb # aclget /sbin # aclget /usr/sbin If any of the command files have extended permissions enabled, this is a finding.

Fix Text

Remove the extended ACL(s) from the system command file(s) and set the extended permissions to disabled by running the following command: # acledit [command-path ]/[ command-file]

Additional Identifiers

Rule ID: SV-215325r991560_rule

Vulnerability ID: V-215325

Group Title: SRG-OS-000259-GPOS-00100

Expert Comments

CCIs tied to check.

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