Shared user accounts must not be permitted on the system.

From Windows Server 2008 R2 Member Server Security Technical Implementation Guide

Part of Shared User Accounts

Associated with: CCI-000764

SV-32241r2_rule Shared user accounts must not be permitted on the system.

Vulnerability discussion

Shared accounts (accounts where two or more people log on with the same user identification) do not provide adequate identification and authentication. There is no way to provide for nonrepudiation or individual accountability for system access and resource usage.

Check content

Determine whether any shared accounts exist. If no shared accounts exist, this is NA. Shared accounts, such as required by an application, may be approved by the organization. This must be documented with the ISSO. Documentation must include the reason for the account, who has access to the account, and how the risk of using the shared account is mitigated to include monitoring account activity. If unapproved shared accounts exist, this is a finding.

Fix text

Remove unapproved shared accounts from the system. Document required shared accounts with the ISSO. Documentation must include the reason for the account, who has access to the account, and how the risk of using the shared account is mitigated to include monitoring account activity.

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