发布日期：2021-01-12
更新日期：2021-01-13

受影响系统：

Microsoft Windows Server 20H2 (Server Core Insta
Microsoft Windows Server 2019 (Server Core Insta
Microsoft Windows Server 2019
Microsoft Windows Server 2016 (Server Core Insta
Microsoft Windows Server 2016
Microsoft Windows Server 2012 R2 (Server Core in
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2004 (Server Core insta
Microsoft Windows Server 1909 (Server Core insta
Microsoft Windows RT 8.1
Microsoft Windows 8.1 for x64-based systems
Microsoft Windows 8.1 for 32-bit systems
Microsoft Windows 7 for x64-based Systems SP1
Microsoft Windows 7 for 32-bit Systems SP1
Microsoft Windows 10 for x64-based Systems
Microsoft Windows 10 for 32-bit Systems
Microsoft Windows 10 20H2 for x64-based Systems
Microsoft Windows 10 20H2 for ARM64-based Systems
Microsoft Windows 10 20H2 for 32-bit Systems
Microsoft Windows 10 2004 for x64-based Systems
Microsoft Windows 10 2004 for ARM64-based Systems
Microsoft Windows 10 2004 for 32-bit Systems
Microsoft Windows 10 1909 for x64-based Systems
Microsoft Windows 10 1909 for ARM64-based Systems
Microsoft Windows 10 1909 for 32-bit Systems
Microsoft Windows 10 1809 for x64-based Systems
Microsoft Windows 10 1809 for ARM64-based Systems
Microsoft Windows 10 1809 for 32-bit Systems
Microsoft Windows 10 1803 for x64-based Systems
Microsoft Windows 10 1803 for ARM64-based Systems
Microsoft Windows 10 1803 for 32-bit Systems
Microsoft Windows 10 1607 for x64-based Systems
Microsoft Windows 10 1607 for 32-bit Systems

描述：

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CVE(CAN) ID: CVE-2021-1679

Cryptographic API (CryptoAPI)是微软在 Windows 操作系统中添加的密码编译机能，作为数据加密与解密功能的重要基础，CryptoAPI 支持同步，异步的密钥加密处理，以及操作系统中的数字证书的管理工作。
Microsoft Windows CryptoAPI存在拒绝服务漏洞。攻击者可利用该漏洞导致目标系统停止响应。

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建议：

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厂商补丁：

Microsoft
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Microsoft已经为此发布了一个安全公告 (CVE-2021-1679) 以及相应补丁:CVE-2021-1679: Windows CryptoAPI  Denial of Service Vulnerability.
链接： https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1679

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