Title

The nosuid option must be configured in the /etc/rmmount.conf file. (Cat II impact)

Discussion

The rmmount.conf file controls the mounting of removable media on a Solaris system. Removable media is not to be trusted with privileged access, and therefore the filesystems must be mounted with the nosuid option, which prevents any executables with the setuid bit set on this filesystem from running with owner privileges.

Check Content

# grep mount /etc/rmmount.conf Confirm the nosuid option is configured. mount * hsfs udfs ufs -o nosuid If the nosuid option is not configured in the /etc/rmmount.conf file, this is a finding.

Fix Text

Edit /etc/rmmount.conf and add the nosuid mount option to the configuration.

Additional Identifiers

Rule ID: SV-227532r603266_rule

Vulnerability ID: V-227532

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

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