STIGQter: STIG Summary: Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 10 Mar 2021:

The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow.

DISA Rule

SV-238240r653895_rule

Vulnerability Number

V-238240

Group Title

SRG-OS-000004-GPOS-00004

Rule Version

UBTU-20-010102

Severity

CAT II

CCI(s)

• CCI-000018 - The information system automatically audits account creation actions.
• CCI-000172 - The information system generates audit records for the events defined in AU-2 d. with the content defined in AU-3.
• CCI-001403 - The information system automatically audits account modification actions.
• CCI-001404 - The information system automatically audits account disabling actions.
• CCI-001405 - The information system automatically audits account removal actions.
• CCI-002130 - The information system automatically audits account enabling actions.

Weight

10

Fix Recommendation

Configure the Ubuntu operating system to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/shadow".

Add or update the following rule to "/etc/audit/rules.d/stig.rules":

-w /etc/shadow -p wa -k usergroup_modification

To reload the rules file, issue the following command:

$ sudo augenrules --load

Check Contents

Verify the Ubuntu operating system generates audit records for all account creations, modifications, disabling, and termination events that affect "/etc/shadow".

Check the currently configured audit rules with the following command:

$ sudo auditctl -l | grep shadow

-w /etc/shadow -p wa -k usergroup_modification

If the command does not return a line that matches the example or the line is commented out, this is a finding.

Note: The "-k" allows for specifying an arbitrary identifier, and the string after it does not need to match the example output above.

Vulnerability Number

V-238240

Documentable

False

Rule Version

UBTU-20-010102

Severity Override Guidance

Verify the Ubuntu operating system generates audit records for all account creations, modifications, disabling, and termination events that affect "/etc/shadow".

Check the currently configured audit rules with the following command:

$ sudo auditctl -l | grep shadow

-w /etc/shadow -p wa -k usergroup_modification

If the command does not return a line that matches the example or the line is commented out, this is a finding.

Note: The "-k" allows for specifying an arbitrary identifier, and the string after it does not need to match the example output above.

Check Content Reference

M

Target Key

5318

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