RHEL 8 must require users to reauthenticate for privilege escalation.

STIG ID: RHEL-08-010381  |  SRG: SRG-OS-000373-GPOS-00156 |  Severity: medium |  CCI: CCI-002038,CCI-004895 |  Vulnerability Id: V-230272 | 

Vulnerability Discussion

Without reauthentication, users may access resources or perform tasks for which they do not have authorization.

When operating systems provide the capability to escalate a functional capability, it is critical the user reauthenticate.

Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158

Check

Verify that "/etc/sudoers" has no occurrences of "!authenticate".

Check that the "/etc/sudoers" file has no occurrences of "!authenticate" by running the following command:

$ sudo grep -i !authenticate /etc/sudoers /etc/sudoers.d/*

If any occurrences of "!authenticate" return from the command, this is a finding.

Fix

Remove any occurrence of "!authenticate" found in "/etc/sudoers" file or files in the "/etc/sudoers.d" directory.
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