STIGQter STIGQter: STIG Summary: Red Hat Enterprise Linux 7 Security Technical Implementation Guide Version: 3 Release: 3 Benchmark Date: 23 Apr 2021:

The Red Hat Enterprise Linux operating system must be configured so that file systems containing user home directories are mounted to prevent files with the setuid and setgid bit set from being executed.

DISA Rule

SV-204480r603838_rule

Vulnerability Number

V-204480

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

RHEL-07-021000

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.

Check Contents

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

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

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

# awk -F: '($3>=1000)&&($7 !~ /nologin/){print $1, $3, $6}' /etc/passwd
smithj 1001 /home/smithj
thomasr 1002 /home/thomasr

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

# more /etc/fstab

UUID=a411dc99-f2a1-4c87-9e05-184977be8539 /home ext4 rw,relatime,discard,data=ordered,nosuid 0 2

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-204480

Documentable

False

Rule Version

RHEL-07-021000

Severity Override Guidance

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

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

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

# awk -F: '($3>=1000)&&($7 !~ /nologin/){print $1, $3, $6}' /etc/passwd
smithj 1001 /home/smithj
thomasr 1002 /home/thomasr

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

# more /etc/fstab

UUID=a411dc99-f2a1-4c87-9e05-184977be8539 /home ext4 rw,relatime,discard,data=ordered,nosuid 0 2

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

2899

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