Vulnerability identifier: #VU59392
Vulnerability risk: Critical
CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
Windows
Operating systems & Components /
Operating system
Windows Server
Operating systems & Components /
Operating system
Microsoft IIS
Server applications /
Web servers
Vendor: Microsoft
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the HTTP Trailer Support feature in HTTP Protocol Stack (http.sys). A remote attacker can send a specially crafted HTTP request to the web server, trigger a buffer overflow and execute arbitrary code on the system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Windows: 10 20H2 - 10 1809, 11 21H2
Windows Server: 2019 - 2022
Microsoft IIS: 10.0
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21907
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.