Title

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

Open a terminal session and enter the following command to view extended ACLs. find /bin /sbin /usr/bin /usr/sbin -print -exec ls -lLd \{\} \; | egrep '^..........+' If any command files are shown with permissions that include a '+', the file has an extended ACL, this is a finding.

Fix Text

Open a terminal session and enter the following command to remove the extended ACLs. chmod -N <path/file with extended ACL>

Additional Identifiers

Rule ID: SV-38072r1_rule

Vulnerability ID: V-22314

Group Title:

Expert Comments

CCIs tied to check.

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