CVE-2021-30186 Explained : Impact and Mitigation

CODESYS V2 runtime system SP before 2.4.7.55 is affected by a Heap-based Buffer Overflow vulnerability.

Understanding CVE-2021-30186

This CVE record highlights a critical vulnerability in CODESYS V2 runtime system SP.

What is CVE-2021-30186?

CVE-2021-30186 refers to a Heap-based Buffer Overflow vulnerability in CODESYS V2 runtime system SP before version 2.4.7.55.

The Impact of CVE-2021-30186

Exploitation of this vulnerability could lead to arbitrary code execution or denial of service.

Technical Details of CVE-2021-30186

This section provides more insight into the vulnerability.

Vulnerability Description

The vulnerability is caused due to improper validation of user-supplied input leading to a Heap-based Buffer Overflow.

Affected Systems and Versions

CODESYS V2 runtime system SP versions before 2.4.7.55 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious inputs to trigger the Buffer Overflow.

Mitigation and Prevention

Protecting systems from CVE-2021-30186 requires immediate action and long-term security measures.

Immediate Steps to Take

Update the CODESYS V2 runtime system to version 2.4.7.55 or later.
Implement security patches provided by the vendor.

Long-Term Security Practices

Regularly update software to mitigate known vulnerabilities.
Monitor security advisories and promptly apply patches.

Patching and Updates

Stay informed about security updates for CODESYS V2 and ensure a robust patch management process.