Detections
Analytics

1.257 ALMA-09-032470

Information

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

GROUP ID: V-269363
RULE ID: SV-269363r1050246

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

Solution

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.

See Also

https://workbench.cisecurity.org/benchmarks/27039

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-3(4), CCI|CCI-002165, CCI|CCI-004045, Rule-ID|SV-269363r1050246_rule, STIG-ID|ALMA-09-032470, Vuln-ID|V-269363

Plugin: Unix

Control ID: f0bca19f3f2fb5c84a279299a83ce353bc5dcb796bc05f0ae1af20b06a630978