Amazon Corretto Java 11.x 11.0.19.7.1 Multiple Vulnerabilities

Overview

Amazon Corretto is a no-cost, multi-platform, production-ready distribution of the OpenJDK. The version 11.x of Amazon Corretto, prior to 11.0.19.7.1, contains multiple security vulnerabilities that can lead to remote code execution, information disclosure, and other significant security risks.

• Severity: High

Impact

• Remote Code Execution (RCE): Certain vulnerabilities can allow attackers to execute arbitrary code, potentially leading to full system compromise.
• Information Disclosure: Specific flaws may expose sensitive data to unauthorized users, which can lead to further attacks.
• Denial of Service (DoS): Some vulnerabilities can be exploited to make Java applications unresponsive, causing service disruptions.
• Privilege Escalation: Vulnerabilities can sometimes be exploited to gain higher privileges on the affected systems.

Cause

• Improper Input Validation: Many vulnerabilities arise from the platform's failure to adequately validate inputs, which can lead to various injection attacks.
• Insecure Configuration: Incorrect or insecure default configurations can expose Java applications to potential exploits.
• Outdated Versions: Running outdated versions of Amazon Corretto that have not been updated with security patches.
• Complexity and Legacy Code: The extensive and complex nature of Java SE, including legacy code, can harbor hidden vulnerabilities.

Solution

Mitigating Risks from Amazon Corretto Java 11.x Vulnerabilities:

1. Regular Updates:

   • Ensure that Amazon Corretto is updated to the latest version, at least 11.0.19.7.1 or newer, to mitigate known vulnerabilities.

2. Secure Coding Practices:

   • Implement secure coding practices to avoid common pitfalls that lead to vulnerabilities. Use libraries and frameworks that provide enhanced security features.

3. Configuration Hardening:

   • Harden Java configuration settings. Disable unnecessary features and services, and ensure that security features like the Java Security Manager are properly configured.

4. Monitoring and Auditing:

   • Regularly monitor and audit Java applications for suspicious activities and vulnerabilities. Use tools and services that can help in identifying and mitigating risks.

Examples of Specific Amazon Corretto Java 11.x Vulnerabilities Addressed:

• CVE-2023-21930: A vulnerability in the Java SE Libraries that allows RCE.
• CVE-2023-21937: A vulnerability in the Java SE Libraries that allows privilege escalation.
• CVE-2023-21945: A vulnerability in the Java SE Libraries that leads to information disclosure.
• CVE-2023-21967: A vulnerability in the Java SE Libraries that can cause DoS.

References

• Change Log for Amazon Corretto 11
• List of Patches for Amazon Corretto 11

Additional Resources

N/A