CVE-2021-40376 Explained : Impact and Mitigation
Learn about CVE-2021-40376, a vulnerability in otris Update Manager 1.2.1.0 that allows local users to achieve SYSTEM access and potential remote attacks. Find mitigation steps and prevention measures here.
This CVE-2021-40376 article provides details about a vulnerability in otris Update Manager 1.2.1.0 that allows local users to achieve SYSTEM access and potential remote attacks.
Understanding CVE-2021-40376
This section delves into the specifics of CVE-2021-40376.
What is CVE-2021-40376?
CVE-2021-40376 highlights a security flaw in otris Update Manager 1.2.1.0 that enables local users to gain SYSTEM access through unauthenticated calls to exposed interfaces via a .NET named pipe. There is also a possibility of remote exploitation by using WsHTTPBinding for HTTP traffic on TCP port 9000.
The Impact of CVE-2021-40376
The vulnerability can lead to severe consequences:
- Local users achieving SYSTEM access
- Potential remote attacks via WsHTTPBinding on port 9000
Technical Details of CVE-2021-40376
This section outlines the technical aspects of CVE-2021-40376.
Vulnerability Description
The vulnerability in otris Update Manager 1.2.1.0 allows local users to escalate privileges to SYSTEM and opens the door for remote attacks using WsHTTPBinding over port 9000.
Affected Systems and Versions
- Affected Product: otris Update Manager 1.2.1.0
- Vendor: otris
- Versions: All versions are affected
Exploitation Mechanism
The vulnerability is exploited by making unauthenticated calls to exposed interfaces over a .NET named pipe, enabling local users to gain SYSTEM access. Remote attacks can use WsHTTPBinding over TCP port 9000.
Mitigation and Prevention
This section provides guidance on mitigating the risks posed by CVE-2021-40376.
Immediate Steps to Take
- Implement strong authentication mechanisms
- Monitor and restrict access to exposed interfaces
- Apply the principle of least privilege
- Disable unnecessary services
Long-Term Security Practices
- Regular security training for users
- Conduct security audits and assessments
- Stay informed about security best practices
Patching and Updates
- Apply security patches provided by the vendor
- Keep systems up to date with the latest versions to address the vulnerability