SB2021110932 - Remote code execution in Microsoft Virtual Machine Bus (VMBus)
Published: November 9, 2021
Security Bulletin ID
SB2021110932
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
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-2021-26443)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in Microsoft Virtual Machine Bus (VMBus). A remote authenticated attacker on the local network can send a specially crafted communication on the VMBus channel and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.