CVE-2021-38430 : What You Need to Know

FATEK Automation WinProladder is affected by a vulnerability that allows for a stack-based buffer overflow, potentially enabling arbitrary code execution.

Understanding CVE-2021-38430

FATEK Automation WinProladder versions 3.30 and prior are susceptible to a stack-based buffer overflow due to improper validation of user-supplied data.

What is CVE-2021-38430?

The vulnerability in FATEK Automation WinProladder versions 3.30 and earlier arises from the inadequate validation of user-supplied data, leading to a stack-based buffer overflow. This flaw could be exploited by malicious actors to run arbitrary code.

The Impact of CVE-2021-38430

The vulnerability has a CVSS base score of 7.8, indicating a high severity level with significant impacts on confidentiality, integrity, and availability. The attack complexity is low, requiring no special privileges to execute.

Technical Details of CVE-2021-38430

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Vulnerability Description

CWE-121: STACK-BASED BUFFER OVERFLOW CWE-121

Affected Systems and Versions

Product: WinProladder
Vendor: FATEK Automation
Vulnerable Versions: <= 3.30

Exploitation Mechanism

The vulnerability arises from the lack of proper user-supplied data validation in parsing project files, leading to a stack-based buffer overflow. Attackers can leverage this to execute arbitrary code.

Mitigation and Prevention

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Immediate Steps to Take

Users are advised to contact FATEK Automation customer support for additional information.

Long-Term Security Practices

Regularly update to the latest patched versions of WinProladder.

Patching and Updates

FATEK Automation has not collaborated with CISA to mitigate the vulnerabilities yet, necessitating the use of available workarounds and seeking support from the vendor.