CVE-2021-20333 : Security Advisory and Response
Learn about CVE-2021-20333, a vulnerability in MongoDB Server that allows log entry spoofing via newline injection. Understand the impact, affected versions, and mitigation steps.
This article provides details about CVE-2021-20333, a vulnerability affecting MongoDB Server that could lead to server log entry spoofing via newline injection.
Understanding CVE-2021-20333
CVE-2021-20333 is a vulnerability in MongoDB Server that allows attackers to generate artificial log entries or split existing log entries by sending specially crafted commands to the server.
What is CVE-2021-20333?
The CVE-2021-20333 vulnerability in MongoDB Server affects versions v3.6 prior to 3.6.20, v4.0 prior to 4.0.21, and v4.2 prior to 4.2.10. It enables attackers to manipulate server log entries via newline injection.
The Impact of CVE-2021-20333
The impact of CVE-2021-20333 is rated as MEDIUM with a CVSS base score of 5.3. Attackers can exploit this vulnerability with low complexity over the network to create artificial log entries or split existing ones.
Technical Details of CVE-2021-20333
CVE-2021-20333 affects MongoDB Server versions v3.6, v4.0, and v4.2, allowing for log entry spoofing via newline injection.
Vulnerability Description
By sending specially crafted commands to the MongoDB Server, attackers can generate artificial log entries or manipulate existing log entries through newline injection.
Affected Systems and Versions
The vulnerability impacts MongoDB Server versions prior to 3.6.20, 4.0.21, and 4.2.10.
Exploitation Mechanism
Attackers can exploit CVE-2021-20333 over the network with low complexity, requiring no specific user privileges to carry out the attack.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-20333, users should take immediate steps, implement long-term security practices, and apply necessary patches and updates.
Immediate Steps to Take
- Update MongoDB Server to the latest patched version compatible with your environment.
- Monitor server logs for any suspicious or unexpected activities.
Long-Term Security Practices
- Regularly audit and review log entries for anomalies or unauthorized activities.
- Implement network segmentation and access controls to limit potential attack surfaces.
Patching and Updates
Stay informed about security advisories from MongoDB Inc. and apply patches promptly to address known vulnerabilities.