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Removable media, remote file systems, and any file system that does not contain approved setuid files must be mounted with the "nosuid" option.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-805 | GEN002420 | SV-805r2_rule | ECLP-1 | Medium |
| Description |
|---|
| 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. |
| STIG | Date |
|---|---|
| UNIX SRG | 2013-03-26 |
Details
| Check Text ( C-529r2_chk ) |
|---|
| 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 (F-959r2_fix) |
|---|
| 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. |