Microsoft Windows IKEEXT Service Vendor ID Null Pointer Dereference Denial-of-Service Vulnerability [CVE-2023-21758]
CVE number = CVE-2023-21758
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Microsoft Windows.
Authentication is not required to exploit this vulnerability.
The specific flaw exists within the IKEEXT service, which listens on UDP ports 500 and 4500.
A crafted Vendor ID payload can cause a null pointer dereference.
An attacker can leverage this vulnerability to create a denial-of-service condition on the system.
Microsoft has issued an update to correct this vulnerability.
More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21758
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.