STIGQter: STIG Summary: Oracle Linux 7 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

The Oracle Linux operating system must be configured so that all files and directories contained in local interactive user home directories are group-owned by a group of which the home directory owner is a member.

DISA Rule

SV-221733r603260_rule

Vulnerability Number

V-221733

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL07-00-020670

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

Change the group of a local interactive user's files and directories to a group that the interactive user is a member of. To change the group owner of a local interactive user's files and directories, use the following command:

Note: The example will be for the user smithj, who has a home directory of "/home/smithj" and is a member of the users group.

# chgrp users /home/smithj/<file>

Check Contents

Verify all files and directories in a local interactive user home directory are group-owned by a group of which the user is a member.

Check the group owner of all files and directories in a local interactive user's home directory with the following command:

Note: The example will be for the user "smithj", who has a home directory of "/home/smithj".

# ls -lLR /<home directory>/<users home directory>/
-rw-r--r-- 1 smithj smithj 18 Mar 5 17:06 file1
-rw-r--r-- 1 smithj smithj 193 Mar 5 17:06 file2
-rw-r--r-- 1 smithj sa 231 Mar 5 17:06 file3

If any files are found with an owner different than the group home directory user, check to see if the user is a member of that group with the following command:

# grep smithj /etc/group
sa:x:100:juan,shelley,bob,smithj
smithj:x:521:smithj

If the user is not a member of a group that group-owns file(s) in a local interactive user's home directory, this is a finding.

Vulnerability Number

V-221733

Documentable

False

Rule Version

OL07-00-020670

Severity Override Guidance

Verify all files and directories in a local interactive user home directory are group-owned by a group of which the user is a member.

Check the group owner of all files and directories in a local interactive user's home directory with the following command:

Note: The example will be for the user "smithj", who has a home directory of "/home/smithj".

# ls -lLR /<home directory>/<users home directory>/
-rw-r--r-- 1 smithj smithj 18 Mar 5 17:06 file1
-rw-r--r-- 1 smithj smithj 193 Mar 5 17:06 file2
-rw-r--r-- 1 smithj sa 231 Mar 5 17:06 file3

If any files are found with an owner different than the group home directory user, check to see if the user is a member of that group with the following command:

# grep smithj /etc/group
sa:x:100:juan,shelley,bob,smithj
smithj:x:521:smithj

If the user is not a member of a group that group-owns file(s) in a local interactive user's home directory, this is a finding.

Check Content Reference

M

Target Key

4089

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