#VU73517 Input validation error in Microsoft products - CVE-2023-23392
Published: March 14, 2023
Vulnerability identifier: #VU73517
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-23392
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Windows Server
Windows
Microsoft Internet Information Services (IIS)
Windows Server
Windows
Microsoft Internet Information Services (IIS)
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in the HTTP Protocol Stack (http.sys) when handling HTTP/3 requests. A remote attacker can send a specially crafted HTTP/3 request to the affected server and execute arbitrary code on the system.
Successful exploitation of the vulnerability requires HTTP/3 to be enabled on the server.
Remediation
Install updates from vendor's website.