STIGQter: STIG Summary: Red Hat Enterprise Linux 8 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 23 Apr 2021:

RHEL 8 must mount /var/tmp with the noexec option.

DISA Rule

SV-230522r627750_rule

Vulnerability Number

V-230522

Group Title

SRG-OS-000368-GPOS-00154

Rule Version

RHEL-08-040134

Severity

CAT II

CCI(s)

• CCI-001764 - The information system prevents program execution in accordance with organization-defined policies regarding software program usage and restrictions, and/or rules authorizing the terms and conditions of software program usage.

Weight

10

Fix Recommendation

Configure the system so that /var/tmp is mounted with the "noexec" option by adding /modifying the /etc/fstab with the following line:

/dev/mapper/rhel-var-log-audit /var/tmp xfs defaults,nodev,nosuid,noexec 0 0

Check Contents

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

$ sudo mount | grep /var/tmp

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

Verify that the "noexec" option is configured for /var/tmp:

$ sudo cat /etc/fstab | grep /var/tmp

/dev/mapper/rhel-var-log-audit /var/tmp xfs defaults,nodev,nosuid,noexec 0 0

If results are returned and the "noexec" option is missing, or if /var/tmp is mounted without the "noexec" option, this is a finding.

Vulnerability Number

V-230522

Documentable

False

Rule Version

RHEL-08-040134

Severity Override Guidance

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

$ sudo mount | grep /var/tmp

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

Verify that the "noexec" option is configured for /var/tmp:

$ sudo cat /etc/fstab | grep /var/tmp

/dev/mapper/rhel-var-log-audit /var/tmp xfs defaults,nodev,nosuid,noexec 0 0

If results are returned and the "noexec" option is missing, or if /var/tmp is mounted without the "noexec" option, this is a finding.

Check Content Reference

M

Target Key

2921

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