CVE-2021-30191 Explained : Impact and Mitigation
Learn about CVE-2021-30191 affecting CODESYS V2 Web-Server, allowing Buffer Copy without Input Size Checking. Discover impact, mitigation steps, and prevention measures.
CODESYS V2 Web-Server before 1.1.9.20 is affected by a vulnerability that allows a Buffer Copy without Checking the Size of the Input. This can lead to potential security risks for systems using this software.
Understanding CVE-2021-30191
This section dives into the details of the CVE-2021-30191 vulnerability.
What is CVE-2021-30191?
CODESYS V2 Web-Server before 1.1.9.20 has a vulnerability due to inadequate input validation, which can be exploited by attackers to execute malicious activities.
The Impact of CVE-2021-30191
The impact of this vulnerability is significant as it allows threat actors to potentially execute arbitrary code, compromise data integrity, and disrupt system operations.
Technical Details of CVE-2021-30191
Let's explore the technical aspects associated with CVE-2021-30191.
Vulnerability Description
The vulnerability in CODESYS V2 Web-Server before 1.1.9.20 allows for a Buffer Copy operation without properly validating the input size, leading to a potential buffer overflow.
Affected Systems and Versions
All versions of CODESYS V2 Web-Server before 1.1.9.20 are affected by this vulnerability, exposing systems to exploitation if not patched.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted input to the affected server, triggering a buffer overflow and potentially gaining unauthorized access.
Mitigation and Prevention
Discover the necessary steps to mitigate the CVE-2021-30191 vulnerability and protect your systems.
Immediate Steps to Take
Immediately update CODESYS V2 Web-Server to version 1.1.9.20 or apply any patches provided by the vendor to address this vulnerability.
Long-Term Security Practices
Implement secure coding practices, conduct regular security audits, and educate users about the risks associated with unvalidated input.
Patching and Updates
Stay informed about security updates for CODESYS V2 Web-Server and promptly apply patches to ensure ongoing protection against known vulnerabilities.