STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must mount /var/tmp with the nosuid option.

DISA Rule

SV-282587r1200741_rule

Vulnerability Number

V-282587

Group Title

SRG-OS-000368-GPOS-00154

Rule Version

TOSS-05-000136

Severity

CAT II

CCI(s)

• CCI-001764 - Prevent program execution in accordance with organization-defined policies, rules of behavior, and/or access agreements regarding software program usage and restrictions; rules authorizing the terms and conditions of software program usage.

Weight

10

Fix Recommendation

Modify "/etc/fstab" to use the "nosuid" option on the "/var/tmp" directory.

Check Contents

Verify "/var/tmp" is mounted with the "nosuid" option:

$ mount | grep /var/tmp

/dev/mapper/rhel-var-tmp on /var/tmp type xfs (rw,nodev,nosuid,noexec,seclabel)

If the "/var/tmp" file system is mounted without the "nosuid" option, this is a finding.

Vulnerability Number

V-282587

Documentable

False

Rule Version

TOSS-05-000136

Severity Override Guidance

Verify "/var/tmp" is mounted with the "nosuid" option:

$ mount | grep /var/tmp

/dev/mapper/rhel-var-tmp on /var/tmp type xfs (rw,nodev,nosuid,noexec,seclabel)

If the "/var/tmp" file system is mounted without the "nosuid" option, this is a finding.

Check Content Reference

M

Target Key

5738