CVE-2020-4828 : Security Advisory and Response

IBM API Connect versions 10.0.0.0 through 10.0.1.0 and 2018.4.1.0 through 2018.4.1.13 are vulnerable to web cache poisoning due to improper input validation in HTTP request headers.

Understanding CVE-2020-4828

IBM API Connect is susceptible to web cache poisoning, potentially allowing attackers to manipulate HTTP request headers.

What is CVE-2020-4828?

CVE-2020-4828 is a vulnerability in IBM API Connect versions 10.0.0.0 through 10.0.1.0 and 2018.4.1.0 through 2018.4.1.13 that enables web cache poisoning through improper input validation.

The Impact of CVE-2020-4828

CVSS Base Score: 6.5 (Medium)
Attack Vector: Network
Attack Complexity: Low
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: None
Privileges Required: None
User Interaction: None
Exploit Code Maturity: Unproven
Remediation Level: Official Fix
Report Confidence: Confirmed
Scope: Unchanged
Temporal Score: 5.7 (Medium)

Technical Details of CVE-2020-4828

Vulnerability Description

The vulnerability allows attackers to perform web cache poisoning by manipulating HTTP request headers due to inadequate input validation.

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 this vulnerability by modifying HTTP request headers to poison web caches.

Mitigation and Prevention

Immediate Steps to Take

Apply official fixes provided by IBM to address the vulnerability.
Monitor for any unusual HTTP header modifications.

Long-Term Security Practices

Regularly update and patch IBM API Connect to the latest versions.
Implement secure coding practices to prevent input validation vulnerabilities.

Patching and Updates

Ensure that all systems running IBM API Connect are updated with the latest security patches.