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Check: GEN002420

VMware ESX 3 Server: GEN002420 (in version v1 r2)

Title

Removable media, remote file systems, and any file system that does not contain approved setuid files must be mounted with the "nosuid" option. (Cat II impact)

Discussion

The "nosuid" mount option causes the system to not execute setuid files with owner privileges. This option must be used for mounting any file system that does not contain approved setuid files. Executing setuid files from untrusted file systems, or file systems that do not contain approved setuid files, increases the opportunity for unprivileged users to attain unauthorized administrative access.

Check Content

Check /etc/fstab and verify the "nosuid" mount option is used on file systems mounted from removable media, network shares, or any other file system that does not contain approved setuid or setgid files.

Fix Text

Edit /etc/fstab and add the "nosuid" mount option to all file systems mounted from removable media or network shares, and any file system that does not contain approved setuid or setgid files.

Additional Identifiers

Rule ID: SV-805r2_rule

Vulnerability ID: V-805

Group Title: GEN002420

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