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CVE-2022-32230— SMBv3 FileNormalizedNameInformation NULL Pointer Dereference

Quick assessment

Affected
Microsoft Windows 10 Version 20H2
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows SMB Client和Microsoft Windows SMB Server都是美国微软（Microsoft）公司的产品。Microsoft Windows SMB Client是一个应用软件。一个SMB客户端。Microsoft Windows SMB Server是一个网络文件共享协议。它允许计算机上的应用程序读取和写入文件以及从计算机网络中的服务器程序请求服务。 Microsoft Windows SMBv3 存在代码问题漏洞，该漏洞源于存在空指针解引用问题。

CVSS 7.5 · High EPSS 7.53% · P94

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2022-32230

Vulnerability Information
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Vulnerability Title
SMBv3 FileNormalizedNameInformation NULL Pointer Dereference
Source: CVE Program / CVE List V5
Vulnerability Description
Microsoft Windows SMBv3 suffers from a null pointer dereference in versions of Windows prior to the April, 2022 patch set. By sending a malformed FileNormalizedNameInformation SMBv3 request over a named pipe, an attacker can cause a Blue Screen of Death (BSOD) crash of the Windows kernel. For most systems, this attack requires authentication, except in the special case of Windows Domain Controllers, where unauthenticated users can always open named pipes as long as they can establish an SMB session. Typically, after the BSOD, the victim SMBv3 server will reboot.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows SMBv3 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows SMB Client和Microsoft Windows SMB Server都是美国微软（Microsoft）公司的产品。Microsoft Windows SMB Client是一个应用软件。一个SMB客户端。Microsoft Windows SMB Server是一个网络文件共享协议。它允许计算机上的应用程序读取和写入文件以及从计算机网络中的服务器程序请求服务。 Microsoft Windows SMBv3 存在代码问题漏洞，该漏洞源于存在空指针解引用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 10 Version 20H2 19042.1706 ~ 19042.1706 -
Microsoft Windows Server Version 20H2 19042.1706 ~ 19042.1706 -
Microsoft Windows 10 Version 21H1 19042.1706 ~ 19042.1706 -
Microsoft Windows 10 Version 21H2 19042.1706 ~ 19042.1706 -

II. Public POCs for CVE-2022-32230

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III. Intelligence Information for CVE-2022-32230

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Vendor Advisories for CVE-2022-32230 (2)

Proof of Concept for CVE-2022-32230 (1)

Security Blog Posts for CVE-2022-32230 (1)

IV. Related Vulnerabilities

Same product: Windows 10 Version 20H2
Same vendor: Microsoft
Same weakness: CWE-476

V. Comments for CVE-2022-32230

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