CVE-2019-4186 Explained : Impact and Mitigation

IBM Jazz for Service Management 1.1.3 is vulnerable to HTTP header injection, allowing remote attackers to inject arbitrary HTTP headers and conduct various attacks.

Understanding CVE-2019-4186

The vulnerability in IBM Jazz for Service Management 1.1.3 enables attackers to exploit the HTTP Host header trust during caching, leading to potential security risks.

What is CVE-2019-4186?

The vulnerability allows remote attackers to inject arbitrary HTTP headers by sending a crafted HTTP GET request, potentially leading to cross-site scripting, cache poisoning, or session hijacking.

The Impact of CVE-2019-4186

Attack Complexity: Low
Attack Vector: Network
Base Score: 5.3 (Medium)
Exploit Code Maturity: Unproven
Integrity Impact: Low
User Interaction: None
Vector String: CVSS:3.0/AC:L/AV:N/UI:N/A:N/I:L/PR:N/C:N/S:U/E:U/RC:C/RL:O

Technical Details of CVE-2019-4186

The vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

Incorrect trust in the HTTP Host header during caching

Affected Systems and Versions

Product: Jazz for Service Management
Vendor: IBM
Version: 1.1.3

Exploitation Mechanism

Remote attacker injects arbitrary HTTP headers

Mitigation and Prevention

Steps to address and prevent the vulnerability.

Immediate Steps to Take

Apply official fix provided by IBM
Monitor for any unusual HTTP header activities

Long-Term Security Practices

Regularly update and patch the system
Implement network security measures to detect and prevent header injections

Patching and Updates

Refer to IBM Security Bulletin 1071966 for patch details