CVE-2023-21757 Windows Layer 2 Tunneling Protocol (L2TP) Denial of Service Vulnerability
An attacker can cause a denial of service in Windows via the Layer 2 Tunneling Protocol due to a null pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-21757?
CVE-2023-21757 is a high-severity vulnerability in Microsoft Windows 10, published on 10 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Windows Layer 2 Tunneling Protocol (L2TP) Denial of Service Vulnerability
Weakness: CWE-476
Which versions are affected by CVE-2023-21757?
It affects 10 products.
Products include Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2008 and 4 more.
How do I fix CVE-2023-21757?
No fix has been published for CVE-2023-21757 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-21757 being exploited?
There is no known exploitation of CVE-2023-21757 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10
- CVE-2015-2426 Microsoft Windows Adobe Type Manager Library Remote Code Execution
- CVE-2015-1769 Microsoft Windows Mount Manager Privilege Escalation
- CVE-2020-1467 Windows Hard Link Elevation of Privilege Vulnerability
- CVE-2021-26424 Windows TCP/IP Remote Code Execution Vulnerability
- CVE-2021-28476 Windows Hyper-V Remote Code Execution Vulnerability
Sources
Also known as GHSA-476v-g848-xccf.