CVE-2020-4590 : What You Need to Know

IBM WebSphere Application Server Liberty versions 17.0.0.3 through 20.0.0.9 are vulnerable to a denial of service attack. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2020-4590

IBM WebSphere Application Server Liberty versions 17.0.0.3 through 20.0.0.9 are susceptible to a denial of service vulnerability.

What is CVE-2020-4590?

IBM WebSphere Application Server Liberty versions 17.0.0.3 through 20.0.0.9, running oauth-2.0 or openidConnectServer-1.0 server features, are exposed to a denial of service attack by an authenticated client.

The Impact of CVE-2020-4590

CVSS Base Score: 5.3 (Medium)
Attack Vector: Network
Attack Complexity: High
Availability Impact: High
Exploit Code Maturity: Unproven
Privileges Required: Low
User Interaction: None
This vulnerability can be exploited by an authenticated client to conduct a denial of service attack.

Technical Details of CVE-2020-4590

Vulnerability Description

The vulnerability in IBM WebSphere Application Server Liberty allows authenticated clients to perform a denial of service attack.

Affected Systems and Versions

Product: WebSphere Application Server Liberty
Vendor: IBM
Vulnerable Versions: 17.0.0.3, 20.0.0.9

Exploitation Mechanism

The vulnerability can be exploited by authenticated clients running oauth-2.0 or openidConnectServer-1.0 server features to launch a denial of service attack.

Mitigation and Prevention

Immediate Steps to Take

Apply the official fix provided by IBM to address the vulnerability.
Monitor for any unusual network activity that could indicate a denial of service attack.

Long-Term Security Practices

Regularly update and patch the WebSphere Application Server Liberty to prevent security vulnerabilities.

Patching and Updates

Stay informed about security bulletins and updates from IBM to protect against known vulnerabilities.