The operating system must verify remote disconnection at the termination of nonlocal maintenance and diagnostic sessions, when used for nonlocal maintenance sessions.

STIG ID: SRG-OS-000395-GPOS-00175  |  SRG: SRG-OS-000395 |  Severity: medium |  CCI: CCI-002891 |  Vulnerability Id: V-203738 | 

Vulnerability Discussion

If the remote connection is not closed and verified as closed, the session may remain open and be exploited by an attacker; this is referred to as a zombie session. Remote connections must be disconnected and verified as disconnected when nonlocal maintenance sessions have been terminated and are no longer available for use.

Check

Verify the operating system verifies remote disconnection at the termination of nonlocal maintenance and diagnostic sessions, when used for nonlocal maintenance sessions. If it does not, this is a finding.

Fix

Configure the operating system to verify remote disconnection at the termination of nonlocal maintenance and diagnostic sessions, when used for nonlocal maintenance sessions.
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