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Check: GEN003245

IRIX 6.5: GEN003245 (in versions v1 r1 through v1 r0.8)

Title

The at.allow file must not have an extended ACL. (Cat II impact)

Discussion

File system extended ACLs provide access to files beyond what is allowed by the mode numbers of the files. Unauthorized modification of the at.allow file could result in Denial of Service to authorized at users and the granting of the ability to run at jobs to unauthorized users.

Check Content

Check the permissions of the file. # ls -D /etc/cron.d/at.allow If the file has an extended ACL, this is a finding.

Fix Text

Remove the extended ACL from the file. # chmod A- /etc/cron.d/at.allow

Additional Identifiers

Rule ID:

Vulnerability ID: V-22390

Group Title:

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