The ability of Lync to store user passwords must be disabled.

From Microsoft Skype for Business 2016 STIG

Part of DTOO420 - Store user passwords

Associated with: CCI-000366

SV-85525r1_rule The ability of Lync to store user passwords must be disabled.

Vulnerability discussion

Skype for Business 2016 provides a single, unified client for real-time communications, including voice and video calls, Lync Meetings, presence, instant messaging, and persistent chat. These features require the ability to log into the service with a username and password. The Lync client could potentially be configured to store user passwords locally which would allow it to be susceptible to compromise and to be used maliciously.

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Fix text

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Skype for Business 2016 -> Microsoft Lync Feature Policies "Allow storage of user passwords" to "Disabled".

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