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Check: GEN003360

VMware ESX 3 Server: GEN003360 (in version v1 r2)

Title

The at daemon must not execute group-writable or world-writable programs. (Cat II impact)

Discussion

If the at facility executes world-writable or group-writable programs, it is possible for the programs to be accidentally or maliciously changed or replaced without the owner's intent or knowledge. This would cause a system security breach.

Check Content

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

Fix Text

Remove group-write and world-write permissions from files executed by "at" jobs. Procedure: # chmod go-w <file>

Additional Identifiers

Rule ID: SV-988r2_rule

Vulnerability ID: V-988

Group Title: GEN003360

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