CVE-2019-4078 : Security Advisory and Response

IBM WebSphere MQ versions 8.0.0.0 through 8.0.0.9 and 9.0.0.0 through 9.1.1 have a vulnerability that may allow a local non-privileged user to execute code as an administrator due to incorrect permissions set on MQ installation directories.

Understanding CVE-2019-4078

This CVE involves a privilege escalation issue in IBM WebSphere MQ.

What is CVE-2019-4078?

The vulnerability in IBM WebSphere MQ versions 8.0.0.0 through 8.0.0.9 and 9.0.0.0 through 9.1.1 could enable a local non-privileged user to run code as an administrator.

The Impact of CVE-2019-4078

The vulnerability poses a high risk with a CVSS base score of 7.4, allowing unauthorized code execution with high confidentiality, integrity, and availability impact.

Technical Details of CVE-2019-4078

This section covers the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from incorrect permissions on MQ installation directories, enabling unauthorized code execution.

Affected Systems and Versions

IBM WebSphere MQ versions 8.0.0.0 to 8.0.0.9
IBM WebSphere MQ versions 9.0.0.0 to 9.1.1

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Local
Privileges Required: None
User Interaction: None
Exploit Code Maturity: Unproven
Scope: Unchanged

Mitigation and Prevention

Protect your systems from this vulnerability.

Immediate Steps to Take

Apply official fixes provided by IBM.
Monitor for any unauthorized access or code execution.

Long-Term Security Practices

Regularly review and update permissions on installation directories.
Implement least privilege access controls.

Patching and Updates

Stay informed about security bulletins and updates from IBM.