CVE-2022-21159 : Exploit Details and Defense Strategies
Learn about CVE-2022-21159, a high-severity denial of service vulnerability in MZ Automation GmbH libiec61850 1.5.0. Understand the impact, affected systems, exploitation, and mitigation steps.
A denial of service vulnerability has been identified in the parseNormalModeParameters functionality of MZ Automation GmbH libiec61850 1.5.0, allowing threat actors to launch a denial of service attack by sending specially-crafted network requests.
Understanding CVE-2022-21159
This section dives into the details of the CVE-2022-21159 vulnerability.
What is CVE-2022-21159?
The vulnerability lies in the parseNormalModeParameters function of the affected version of MZ Automation GmbH libiec61850, enabling attackers to cause a denial of service by sending a sequence of malformed iec61850 messages.
The Impact of CVE-2022-21159
With a CVSS base score of 7.5, this high-severity vulnerability poses a significant risk to affected systems. An attacker can exploit this flaw to disrupt the availability of services.
Technical Details of CVE-2022-21159
This section will discuss the technical aspects of CVE-2022-21159 in more detail.
Vulnerability Description
The vulnerability results from improper handling of network requests in the parseNormalModeParameters function, leading to a denial of service condition.
Affected Systems and Versions
The vulnerability affects MZ Automation GmbH libiec61850 version 1.5.0.
Exploitation Mechanism
Threat actors can exploit this vulnerability by sending a crafted series of network requests to trigger the denial of service flaw.
Mitigation and Prevention
Protecting your systems from CVE-2022-21159 is crucial to maintaining security. Below are steps to mitigate and prevent potential attacks.
Immediate Steps to Take
- Apply patches and updates provided by MZ Automation GmbH promptly to address the vulnerability.
- Implement network monitoring to detect and block malicious network requests.
Long-Term Security Practices
- Regularly update and patch software to mitigate known vulnerabilities.
- Educate personnel on identifying and reporting suspicious activities within the network.
Patching and Updates
Stay informed about security advisories from MZ Automation GmbH and apply patches as soon as they are released.