CVE-2020-5399 : Exploit Details and Defense Strategies
Learn about CVE-2020-5399, a high-severity vulnerability in Cloud Foundry CredHub versions prior to 2.5.10 that allows unauthorized access due to improper TLS configuration. Find mitigation steps and best practices here.
Cloud Foundry CredHub, versions prior to 2.5.10, connects to a MySQL database without TLS even when configured to use TLS. This vulnerability could allow a malicious user to eavesdrop on database connections and gain unauthorized access to CredHub and other components.
Understanding CVE-2020-5399
This CVE highlights a security issue in CredHub that could lead to unauthorized access due to improper TLS configuration.
What is CVE-2020-5399?
CVE-2020-5399 is a vulnerability in Cloud Foundry CredHub versions prior to 2.5.10 that fails to properly enable TLS for MySQL database connections, potentially exposing sensitive information.
The Impact of CVE-2020-5399
The vulnerability poses a high risk with a CVSS base score of 7.6, allowing attackers to intercept database connections and compromise the confidentiality, integrity, and availability of CredHub and associated components.
Technical Details of CVE-2020-5399
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
CredHub versions prior to 2.5.10 connect to MySQL databases without enforcing TLS, enabling potential eavesdropping on connections.
Affected Systems and Versions
- Product: CredHub
- Vendor: Cloud Foundry
- Versions Affected: < 2.5.10
- Version Type: Edge (custom)
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Adjacent Network
- Privileges Required: Low
- User Interaction: Required
- Scope: Changed
- Confidentiality, Integrity, and Availability Impact: High
Mitigation and Prevention
Protecting systems from CVE-2020-5399 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade CredHub to version 2.5.10 or higher to mitigate the vulnerability.
- Implement network segmentation to restrict access between CredHub and the MySQL database.
Long-Term Security Practices
- Enforce TLS encryption for all database connections within the environment.
- Regularly monitor network traffic for any suspicious activities.
Patching and Updates
- Apply security patches and updates promptly to ensure system resilience against known vulnerabilities.