SB2022020818 - Remote code execution in Microsoft Windows DNS Server
Published: February 8, 2022 Updated: February 10, 2022
Security Bulletin ID
SB2022020818
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Code Injection (CVE-ID: CVE-2022-21984)
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in Windows DNS Server when processing dynamic updates. A remote authenticated user can send a specially crafted DNS request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires to have dynamic updates enabled on the DNS server.
Remediation
Install update from vendor's website.