CVE-2021-29241 Explained : Impact and Mitigation
Understand the impact of CVE-2021-29241, a vulnerability in CODESYS Gateway 3 before 3.5.16.70, leading to a denial of service due to a NULL pointer dereference. Learn mitigation steps.
This article provides insights into CVE-2021-29241, a vulnerability in CODESYS Gateway 3 before version 3.5.16.70 that can lead to a denial of service (DoS) due to a NULL pointer dereference.
Understanding CVE-2021-29241
This section delves into the details of the vulnerability and its potential impact.
What is CVE-2021-29241?
CVE-2021-29241 is a vulnerability found in CODESYS Gateway 3 prior to version 3.5.16.70, presenting a risk of a denial of service attack by triggering a NULL pointer dereference.
The Impact of CVE-2021-29241
The vulnerability could be exploited to cause a denial of service condition, disrupting the normal operation of the affected CODESYS Gateway 3 instances.
Technical Details of CVE-2021-29241
Here, we explore the specifics of the vulnerability, including affected systems and exploitation methods.
Vulnerability Description
CODESYS Gateway 3 before version 3.5.16.70 suffers from a NULL pointer dereference issue, potentially leading to a DoS situation.
Affected Systems and Versions
All instances running CODESYS Gateway 3 versions earlier than 3.5.16.70 are vulnerable to this particular CVE.
Exploitation Mechanism
An attacker could exploit the vulnerability by sending specially crafted requests to the affected CODESYS Gateway 3, triggering the NULL pointer dereference and causing a DoS.
Mitigation and Prevention
In this section, we discuss steps to mitigate the risk posed by CVE-2021-29241 and prevent potential attacks.
Immediate Steps to Take
Users are urged to update their CODESYS Gateway 3 installations to version 3.5.16.70 or later to address the NULL pointer dereference vulnerability.
Long-Term Security Practices
Implementing robust security measures, conducting regular security assessments, and staying informed about software vulnerabilities can enhance overall security posture.
Patching and Updates
Regularly applying software patches and staying up-to-date with security advisories from CODESYS can help protect systems from known vulnerabilities.