| CVE Number | Vulnerability | Product | Severity | Date |
|---|---|---|---|---|
| CVE-2021-26877 | Windows DNS Server Remote Code Execution Vulnerability | Windows Server 2019 | Important | 17-03-2021 |
Technical Information
Brief overview of the risk:
A remote code execution vulnerability on Windows DNS servers which is rated as “exploitation more likely” by Microsoft. This is an Out-of-Band(OOB) read vulnerability which can be exploited by updating the Zone with TXT RR that has a TXT length greater than the actual Data’s length. An attacker who successfully exploited the vulnerability can read arbitrary memory locations and when chained with other vulnerabilities it can lead to remote code execution in the context of the logged on user.
Further information on this vulnerability is available at : CVE-2021-26877
Affected Software
Windows Server version 20H2 (Server Core Installation)Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server, version 1909 (Server Core installation)
Windows Server, version 2004 (Server Core installation)
Windows Server 2016
Windows Server 2016 (Server Core installation)
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)