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Check: GEN001390 M6

MACOSX 10.6: GEN001390 M6 (in version v1 r3)

Title

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

Discussion

File system ACLs can provide access to files beyond what is allowed by the mode numbers of the files. The /etc/passwd file contains the list of local system accounts. It is vital to system security and must be protected from unauthorized modification.

Check Content

Open a terminal session and enter the following command to view the /etc/passwd file extended ACLs. ls -lL /etc/passwd If the permissions 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 /etc/passwd

Additional Identifiers

Rule ID: SV-38089r1_rule

Vulnerability ID: V-22334

Group Title:

Expert Comments

Expert comments are only available to logged-in users.

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