CVE-2019-4655 : What You Need to Know
Learn about CVE-2019-4655 affecting IBM MQ versions 9.1.0.0 to 9.1.3, allowing an authorized user to reset client connections. Find mitigation steps and security practices.
IBM MQ versions 9.1.0.0 to 9.1.3 are vulnerable to a denial of service attack due to a flaw in the Data Conversion routine, allowing an authorized user to reset client connections.
Understanding CVE-2019-4655
IBM MQ versions 9.1.0.0 to 9.1.3 are susceptible to a denial of service vulnerability identified as IBM X-Force ID: 170966.
What is CVE-2019-4655?
- IBM MQ versions 9.1.0.0 to 9.1.3 are at risk of a denial of service attack.
- The vulnerability enables an authorized user to reset client connections by exploiting a flaw in the Data Conversion routine.
The Impact of CVE-2019-4655
- CVSS Base Score: 4.3 (Medium)
- Attack Vector: Network
- Attack Complexity: Low
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
- Privileges Required: Low
- User Interaction: None
- Exploit Code Maturity: Unproven
- Remediation Level: Official Fix
- Report Confidence: Confirmed
Technical Details of CVE-2019-4655
Vulnerability Description
- The vulnerability in IBM MQ allows an authorized user to reset client connections.
Affected Systems and Versions
- IBM MQ versions 9.1.0.0, 9.1.0.1, 9.1.1, 9.1.0.2, 9.1.2, 9.1.0.3, and 9.1.3.
Exploitation Mechanism
- An authenticated user can exploit the flaw in the Data Conversion routine to trigger a denial of service attack.
Mitigation and Prevention
Immediate Steps to Take
- Apply the official fix provided by IBM to address the vulnerability.
- Monitor for any unusual client connection resets.
Long-Term Security Practices
- Regularly update IBM MQ to the latest version to prevent known vulnerabilities.
Patching and Updates
- Stay informed about security bulletins and patches released by IBM for IBM MQ.