CVE-2020-4640 : What You Need to Know

IBM API Connect versions 10.0.0.0 through 10.0.1.0 and 2018.4.1.0 through 2018.4.1.13 are affected by a vulnerability that can expose sensitive information in URL fragments, potentially leading to impersonation attacks.

Understanding CVE-2020-4640

Certain configurations of IBM API Connect are susceptible to exposing sensitive data in URL fragments, which can be cached in intermediate nodes, allowing attackers to impersonate users.

What is CVE-2020-4640?

IBM API Connect versions 10.0.0.0 through 10.0.1.0 and 2018.4.1.0 through 2018.4.1.13 may reveal sensitive information in URL fragments, posing a security risk.

The Impact of CVE-2020-4640

Attackers can exploit this vulnerability to access sensitive data and potentially impersonate users.
The information exposed in URL fragments can be cached in intermediary nodes like proxy servers, CDNs, and logging platforms.

Technical Details of CVE-2020-4640

IBM API Connect vulnerability details and affected systems.

Vulnerability Description

Vulnerability Type: Information Disclosure
IBM X-Force ID: 185510
Attack Vector: Adjacent Network
Attack Complexity: High
CVSS Base Score: 3.4 (Low Severity)

Affected Systems and Versions

IBM API Connect 10.0.0.0 through 10.0.1.0
IBM API Connect 2018.4.1.0 through 2018.4.1.13

Exploitation Mechanism

Attackers can exploit the exposed information in URL fragments to impersonate users and launch attacks.

Mitigation and Prevention

Protecting systems from CVE-2020-4640.

Immediate Steps to Take

Apply official fixes provided by IBM to address the vulnerability.
Monitor and restrict access to sensitive information that could be exposed.

Long-Term Security Practices

Regularly update and patch IBM API Connect to prevent security vulnerabilities.
Implement secure coding practices to mitigate information disclosure risks.

Patching and Updates

Stay informed about security bulletins and updates from IBM.