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Check: GEN003380

SUSE Linux Enterprise Server v11 for System z STIG: GEN003380 (in versions v1 r12 through v1 r9)

Title

The at daemon must not execute programs in, or subordinate to, world-writable directories. (Cat II impact)

Discussion

If "at" programs are located in, or subordinate, to world-writable directories, they become vulnerable to removal and replacement by malicious users or system intruders.

Check Content

List any "at" jobs on the system. Procedure: # ls /var/spool/at /var/spool/atjobs For each "at" job, determine which programs are executed by "at." Procedure: # more <at job file> Check the directory containing each program executed by "at" for world-writable permissions. Procedure: # ls -la <at program file directory> If "at" executes programs in world-writable directories, this is a finding.

Fix Text

Remove the world-writable permission from directories containing programs executed by "at". Procedure: # chmod o-w <at program directory>

Additional Identifiers

Rule ID: SV-45669r1_rule

Vulnerability ID: V-989

Group Title: GEN003380

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000225	Employ the principle of least privilege, allowing only authorized accesses for users (or processes acting on behalf of users) which are necessary to accomplish assigned organizational tasks.

Controls

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

Number	Title
AC-6	Least Privilege