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

RHEL 8 must prevent files with the setuid and setgid bit set from being executed on file systems that contain user home directories.

DISA Rule

SV-230299r627750_rule

Vulnerability Number

V-230299

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-08-010570

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure the "/etc/fstab" to use the "nosuid" option on file systems that contain user home directories for interactive users.

Check Contents

Verify file systems that contain user home directories are mounted with the "nosuid" option.

Note: If a separate file system has not been created for the user home directories (user home directories are mounted under "/"), this is automatically a finding as the "nosuid" option cannot be used on the "/" system.

Find the file system(s) that contain the user home directories with the following command:

$ sudo awk -F: '($3>=1000)&&($7 !~ /nologin/){print $1,$3,$6}' /etc/passwd

smithj:1001: /home/smithj
robinst:1002: /home/robinst

Check the file systems that are mounted at boot time with the following command:

$ sudo more /etc/fstab

UUID=a411dc99-f2a1-4c87-9e05-184977be8539 /home xfs rw,relatime,discard,data=ordered,nosuid,nodev,noexec 0 0

If a file system found in "/etc/fstab" refers to the user home directory file system and it does not have the "nosuid" option set, this is a finding.

Vulnerability Number

V-230299

Documentable

False

Rule Version

RHEL-08-010570

Severity Override Guidance

Verify file systems that contain user home directories are mounted with the "nosuid" option.

Note: If a separate file system has not been created for the user home directories (user home directories are mounted under "/"), this is automatically a finding as the "nosuid" option cannot be used on the "/" system.

Find the file system(s) that contain the user home directories with the following command:

$ sudo awk -F: '($3>=1000)&&($7 !~ /nologin/){print $1,$3,$6}' /etc/passwd

smithj:1001: /home/smithj
robinst:1002: /home/robinst

Check the file systems that are mounted at boot time with the following command:

$ sudo more /etc/fstab

UUID=a411dc99-f2a1-4c87-9e05-184977be8539 /home xfs rw,relatime,discard,data=ordered,nosuid,nodev,noexec 0 0

If a file system found in "/etc/fstab" refers to the user home directory file system and it does not have the "nosuid" option set, this is a finding.

Check Content Reference

M

Target Key

2921

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