Security News > 2022 > January > Microsoft: New critical Windows HTTP vulnerability is wormable
Microsoft has patched a critical flaw tagged as wormable and found to impact the latest desktop and server Windows versions, including Windows 11 and Windows Server 2022.
The bug, tracked as CVE-2022-21907 and patched during this month's Patch Tuesday, was discovered in the HTTP Protocol Stack used as a protocol listener for processing HTTP requests by the Windows Internet Information Services web server.
Successful exploitation requires threat actors to send maliciously crafted packets to targeted Windows servers, which use the vulnerable HTTP Protocol Stack for processing packets.
On some Windows versions, the HTTP Trailer Support feature containing the bug is not enabled by default.
In the last two years, Microsoft has patched several other wormable bugs, impacting the Windows DNS Server, the Remote Desktop Services platform, and the Server Message Block v3 protocol.
Redmond also addressed another Windows HTTP RCE vulnerability in May 2021, for which security researchers released demo exploit code that could trigger blue screens of death.
News URL
Related news
- Researchers Uncover OS Downgrade Vulnerability Targeting Microsoft Windows Kernel (source)
- Patching problems: The “return” of a Windows Themes spoofing vulnerability (source)
- Microsoft fixes Windows 10 bug causing apps to stop working (source)
- Microsoft wants $30 if you want to delay Windows 11 switch (source)
- Hackers target critical zero-day vulnerability in PTZ cameras (source)
- Microsoft delays Windows Recall again, now by December (source)
- Microsoft Delays Windows Copilot+ Recall Release Over Privacy Concerns (source)
- Week in review: Windows Themes spoofing bug “returns”, employees phished via Microsoft Teams (source)
- Microsoft confirms Windows Server 2025 blue screen, install issues (source)
- Microsoft Notepad to get AI-powered rewriting tool on Windows 11 (source)
Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2022-01-11 | CVE-2022-21907 | Unspecified vulnerability in Microsoft products HTTP Protocol Stack Remote Code Execution Vulnerability | 0.0 |