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Check: GEN004420

VMware ESX 3 Server: GEN004420 (in version v1 r2)

Title

Files executed through a mail aliases file must have mode 0755 or less permissive. (Cat II impact)

Discussion

If a file executed through a mail alias file has permissions greater than 0755, it can be modified by an unauthorized user and may contain malicious code or instructions possibly compromising the system.

Check Content

Find the aliases file on the system. Procedure: # find / -name aliases -depth -print Examine the aliases file for any directories or paths that may be utilized. Procedure: # more <aliases file location> Check the permissions for any paths referenced. Procedure: # ls -lL <path> If any file referenced from the aliases file has a mode more permissive than 0755, this is a finding.

Fix Text

Use the chmod command to change the access permissions for files executed from the alias file. For example: # chmod 0755 < filename >

Additional Identifiers

Rule ID: SV-834r2_rule

Vulnerability ID: V-834

Group Title: GEN004420

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