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Vulnerability DatabaseCVE-2023-21690
CVE-2023-21690:
vulnerability analysis and mitigation
Overview
Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability (CVE-2023-21690) was disclosed on February 14, 2023. This vulnerability affects multiple Windows systems including Windows Server 2022, 2019, 2016, 2012, 2012 R2, and Windows 11/10 versions (Arctic Wolf).
Technical details
The vulnerability has a CVSS score of 9.8, indicating critical severity. An unauthenticated attacker could exploit this vulnerability by sending specially crafted malicious PEAP packets over the network to a Microsoft PEAP Server. The vulnerability is only exploitable when Network Policy Server (NPS) is running on the Windows Server and has a network policy configured that allows PEAP (Arctic Wolf, Rapid7).
Impact
The vulnerability allows attackers to execute remote code on affected systems without requiring privileges or user interaction. This could potentially lead to complete system compromise if successfully exploited (Arctic Wolf).
Mitigation and workarounds
Microsoft has released security updates to address this vulnerability. The patches are available through various KB updates depending on the Windows version: KB5022842 for Windows Server 2022, KB5022840 for Windows Server 2019, KB5022838 for Windows Server 2016, KB5022894 for Windows Server 2012 R2, and KB5022895 for Windows Server 2012 (Arctic Wolf).
Additional resources
Source: This report was generated using AI
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