CVE-2022-32230
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.53% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- microsoft/windows 10 · microsoft/windows 11 · microsoft/windows server 2019
- Source
- cve@rapid7.com
References
- https://github.com/zeroSteiner/metasploit-framework/blob/feat/mod/cve-2022-32230/modules/auxiliary/dos/smb/smb_filenormalizednameinformation.rbExploit, Third Party Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-32230Patch, Vendor Advisory
- https://support.microsoft.com/en-us/topic/may-10-2022-kb5013942-os-builds-19042-1706-19043-1706-and-19044-1706-60b51119-85be-4a34-9e21-8954f6749504Patch, Vendor Advisory
- https://www.rapid7.com/blog/post/2022/06/14/cve-2022-32230-windows-smb-denial-of-service-vulnerability-fixed/Exploit, Third Party Advisory
- https://github.com/zeroSteiner/metasploit-framework/blob/feat/mod/cve-2022-32230/modules/auxiliary/dos/smb/smb_filenormalizednameinformation.rbExploit, Third Party Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-32230Patch, Vendor Advisory
- https://support.microsoft.com/en-us/topic/may-10-2022-kb5013942-os-builds-19042-1706-19043-1706-and-19044-1706-60b51119-85be-4a34-9e21-8954f6749504Patch, Vendor Advisory
- https://www.rapid7.com/blog/post/2022/06/14/cve-2022-32230-windows-smb-denial-of-service-vulnerability-fixed/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.