CVE-2021-29843 : Security Advisory and Response
Learn about CVE-2021-29843 impacting IBM MQ 9.1 LTS, 9.1 CD, 9.2 LTS, and 9.2 CD. This Medium severity vulnerability could lead to a denial of service attack. Find mitigation strategies here.
IBM MQ 9.1 LTS, 9.1 CD, 9.2 LTS, and 9.2 CD are vulnerable to a denial of service attack due to issues processing message properties. This CVE was published on November 5, 2021.
Understanding CVE-2021-29843
This section will delve into the details of CVE-2021-29843 including the vulnerability description, impacted systems, exploitation mechanisms, and mitigation strategies.
What is CVE-2021-29843?
The vulnerability in IBM MQ Appliance versions 9.1 LTS, 9.1 CD, 9.2 LTS, and 9.2 CD could allow attackers to launch a denial of service attack by exploiting a specific issue related to message properties processing. This vulnerability has been identified with IBM X-Force ID: 205203.
The Impact of CVE-2021-29843
The impact of this CVE is rated as MEDIUM based on the CVSS v3.0 scoring system. It could potentially lead to a denial of service affecting the availability of the affected systems.
Technical Details of CVE-2021-29843
Let's explore the technical aspects of CVE-2021-29843 to understand the vulnerability further.
Vulnerability Description
The vulnerability arises from a flaw in processing message properties within IBM MQ Appliance versions 9.1 LTS, 9.1 CD, 9.2 LTS, and 9.2 CD, allowing attackers to initiate a denial of service attack.
Affected Systems and Versions
- Affected Product: MQ Appliance
- Vendor: IBM
- Vulnerable Versions: 9.1 LTS, 9.1 CD, 9.2 LTS, 9.2 CD
Exploitation Mechanism
The attack complexity is rated as HIGH, with the exploit requiring low privileges. The attack can be conducted over the network without user interaction.
Mitigation and Prevention
To secure your systems against CVE-2021-29843, consider the following mitigation strategies.
Immediate Steps to Take
- IBM recommends applying the official fix provided by the vendor to address the vulnerability promptly.
Long-Term Security Practices
- Regularly monitor security bulletins and updates from IBM to stay informed about potential vulnerabilities.
Patching and Updates
- Install updates and patches released by IBM for the affected versions of IBM MQ Appliance to mitigate the risk of exploitation.