CVE-2019-4227 : Vulnerability Insights and Analysis

IBM MQ versions 8.0.0.4 to 8.0.0.12, 9.0.0.0 to 9.0.0.6, 9.1.0.0 to 9.1.0.2, and 9.1.0 to 9.1.2 are vulnerable to a session fixation attack due to issues with AMQP Listeners.

Understanding CVE-2019-4227

This CVE involves a vulnerability in IBM MQ that could potentially allow unauthorized users to exploit a session fixation attack.

What is CVE-2019-4227?

The vulnerability in IBM MQ versions 8.0.0.4 to 8.0.0.12, 9.0.0.0 to 9.0.0.6, 9.1.0.0 to 9.1.0.2, and 9.1.0 to 9.1.2 enables unauthorized users to conduct a session fixation attack due to improper disconnection of clients.

The Impact of CVE-2019-4227

CVSS Score: 5.6 (Medium Severity)
Attack Vector: Network
Attack Complexity: High
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: Low
Privileges Required: None
Exploit Code Maturity: Unproven
Remediation Level: Official Fix
Report Confidence: Confirmed
Vector String: CVSS:3.0/AC:H/UI:N/C:L/PR:N/AV:N/A:L/S:U/I:L/RL:O/E:U/RC:C

Technical Details of CVE-2019-4227

Vulnerability Description

The vulnerability allows unauthorized users to exploit a session fixation attack in IBM MQ AMQP Listeners.

Affected Systems and Versions

IBM MQ versions 8.0.0.4 to 8.0.0.12
IBM MQ versions 9.0.0.0 to 9.0.0.6
IBM MQ versions 9.1.0.0 to 9.1.0.2
IBM MQ versions 9.1.0 to 9.1.2

Exploitation Mechanism

Unauthorized users can exploit the vulnerability by manipulating sessions due to improper client disconnection.

Mitigation and Prevention

Immediate Steps to Take

Apply official fixes provided by IBM to address the vulnerability.
Monitor and restrict access to affected systems.
Educate users on secure session management practices.

Long-Term Security Practices

Regularly update and patch IBM MQ to the latest versions.
Implement network segmentation and access controls to limit unauthorized access.

Patching and Updates

IBM has released official fixes to address the vulnerability in affected versions of IBM MQ.