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Ancillary Function Driver (AFD) For Winsock Privilege Escalation Exploit

[ 0Day-ID-38397 ]
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Ancillary Function Driver (AFD) For Winsock Privilege Escalation Exploit [ Highlight ]
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Platform
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Price
free
Risk
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Security Risk Critical
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Rel. releases
Description
A vulnerability exists in the Windows Ancillary Function Driver for Winsock (afd.sys) can be leveraged by an attacker to escalate privileges to those of NT AUTHORITY\SYSTEM. Due to a flaw in AfdNotifyRemoveIoCompletion, it is possible to create an arbitrary kernel Write-Where primitive, which can be used to manipulate internal I/O ring structures and achieve local privilege escalation. This exploit only supports Windows 11 22H2 up to build 22621.963 (patched in January 2023 updates).
CVE
CVE-2023-21768
Other Information
Abuses
0
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0
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Author
BL
29
Exploits
1655
Readers
57
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