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ALMA-09-004970 - AlmaLinux OS 9 must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/sudoers.

Warning! Audit Deprecated

This audit has been deprecated and will be removed in a future update.

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Information

Audit records provide a means to investigate events related to a security incident. Insufficient audit coverage will make identifying those responsible challenging or impossible.

This auditd policy will watch for and alert the system administrators regarding any modifications to the "/etc/sudoers" file such as adding privileged users, groups, or commands.

Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000037-GPOS-00015, SRG-OS-000042-GPOS-00020, SRG-OS-000062-GPOS-00031, SRG-OS-000304-GPOS-00121, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000470-GPOS-00214, SRG-OS-000471-GPOS-00215, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000466-GPOS-00210, SRG-OS-000476-GPOS-00221, SRG-OS-000755-GPOS-00220

Solution

Configure AlmaLinux OS 9 to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/sudoers.

Add the following to the "/etc/audit/rules.d/audit.rules" file:

-w /etc/sudoers -p wa -k identity

Merge the rules into /etc/audit/audit.rules:

$ augenrules --load

Reboot the server so the changes to take effect.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CL_AlmaLinux_OS_9_V1R5_STIG.zip

Item Details

References: CAT|II, CCI|CCI-000015, CCI|CCI-000018, CCI|CCI-000130, CCI|CCI-000135, CCI|CCI-000169, CCI|CCI-000172, CCI|CCI-001403, CCI|CCI-001404, CCI|CCI-001405, CCI|CCI-002130, CCI|CCI-002884, CCI|CCI-004188, Rule-ID|SV-269129r1050011_rule, STIG-ID|ALMA-09-004970, Vuln-ID|V-269129

Plugin: Unix

Control ID: b646558ab69c0d60773c53a43cd98bb4889a33d0eda9355bfcd640ec1c4240ad