Check: UBTU-20-010104
Canonical Ubuntu 20.04 LTS STIG:
UBTU-20-010104
(in versions v1 r12 through v1 r1)
Title
The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/opasswd. (Cat II impact)
Discussion
Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create an account. Auditing account creation actions provides logging that can be used for forensic purposes. To address access requirements, many operating systems may be integrated with enterprise level authentication/access/auditing mechanisms that meet or exceed access control policy requirements. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000458-GPOS-00203, SRG-OS-000476-GPOS-00221
Check Content
Verify the Ubuntu operating system generates audit records for all account creations, modifications, disabling, and termination events that affect "/etc/security/opasswd". Check the currently configured audit rules with the following command: $ sudo auditctl -l | grep opasswd -w /etc/security/opasswd -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.
Fix Text
Configure the Ubuntu operating system to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/security/opasswd". Add or update the following rule to "/etc/audit/rules.d/stig.rules": -w /etc/security/opasswd -p wa -k usergroup_modification To reload the rules file, issue the following command: $ sudo augenrules --load
Additional Identifiers
Rule ID: SV-238242r853420_rule
Vulnerability ID: V-238242
Group Title: SRG-OS-000004-GPOS-00004
Expert Comments
CCIs
Number | Definition |
---|---|
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. |