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AlmaLinux OS 9 must restrict the use of the "su" command.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-269363ALMA-09-032470SV-269363r1050246_ruleCCI-004045medium
Description
The "su" program provides a "switch user" capability. It is commonly used to become root but can be used to switch to any user. Limiting access to such commands is considered a good security practice. Satisfies: SRG-OS-000109-GPOS-00056, SRG-OS-000312-GPOS-00124, SRG-OS-000312-GPOS-00122, SRG-OS-000312-GPOS-00123
STIGDate
Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide2026-02-27

Related Frameworks

1 mapping across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-02.1Group Authentication
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (70) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-12Session Termination
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00

+60 more (top 10 by confidence shown)

CCI1 mapping
CCI-004045
1.00

Details

Check Text (C-269363r1050246_chk)

Verify that AlmaLinux OS 9 requires uses to be members of the "wheel" group with the following command: $ grep pam_wheel /etc/pam.d/su auth required pam_wheel.so use_uid If a line for "pam_wheel.so" does not exist, or is commented out, this is a finding.

Fix Text (F-73295r1049554_fix)

Configure AlmaLinux OS 9 to require users to be in the "wheel" group to run "su" command. In the "/etc/pam.d/su" file, uncomment the "pam_wheel.so" line as per the instructions in the file: # Uncomment the following line to require a user to be in the "wheel" group. #auth required pam_wheel.so use_uid If necessary, create a "wheel" group and add administrative users to the group.