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Check: GEN001430

HP-UX 11.23 STIG: GEN001430 (in version v1 r8)

Title

The /etc/shadow file must not have an extended ACL. (Cat II impact)

Discussion

The /etc/shadow file contains the list of local system accounts. It is vital to system security and must be protected from unauthorized modification. The file also contains password hashes which must not be accessible to users other than root.

Check Content

For Trusted Mode: Check the TCB auth files and directories. # ls -lLd /tcb /tcb/files /tcp/files/auth # ls -lL /tcb/files/auth/[a-z,A-Z]/* If the permissions of any of the /tcb files and directories include a “+”, this is a finding. For SMSE: Check the /etc/shadow file. # ls -lL /etc/shadow If the /etc/shadow file permissions include a “+”, the file has an extended ACL, this is a finding.

Fix Text

For Trusted Mode: # chacl -z /tcb # chacl -z /tcb/files /tcb/files/auth # chacl -z /tcb/files/auth/[a-z]/* For SMSE: # chacl -z /etc/shadow

Additional Identifiers

Rule ID: SV-26441r2_rule

Vulnerability ID: V-22340

Group Title: GEN001430

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000225	The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions.

Controls

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

Number	Title
AC-6	Least Privilege