CVE-2021-43767 : Vulnerability Insights and Analysis
Learn about CVE-2021-43767, a vulnerability in Odyssey allowing man-in-the-middle attacks to pass false responses to clients. Find mitigation steps and affected systems here.
Odyssey passes unencrypted bytes to clients from a man-in-the-middle attack. Learn about the impact, technical details, and mitigation steps for this vulnerability.
Understanding CVE-2021-43767
What is CVE-2021-43767?
Odyssey storage, when using PostgreSQL server with vulnerable configurations, allows a man-in-the-middle attacker to inject false responses to client queries, bypassing SSL verification.
The Impact of CVE-2021-43767
Despite using SSL and encryption, Odyssey forwards manipulated data to clients, appearing as valid server responses, exposing sensitive information to malicious actors.
Technical Details of CVE-2021-43767
Vulnerability Description
Odyssey's configuration with PostgreSQL server using vulnerable authentication methods enables man-in-the-middle attacks, compromising data integrity and confidentiality.
Affected Systems and Versions
- Product: Odyssey
- Version: Odyssey 1.1
Exploitation Mechanism
- Attacker intercepts communication between Odyssey and PostgreSQL
- Manipulates responses to inject false data
Mitigation and Prevention
Immediate Steps to Take
- Disable 'trust' and 'clientcert' requirements on PostgreSQL
- Implement 'cert' authentication for enhanced security
Long-Term Security Practices
- Regularly monitor network traffic for suspicious activities
- Conduct security audits to identify vulnerabilities
Patching and Updates
- Update Odyssey to a patched version to fix the vulnerability.