CVE-2020-11999 : Exploit Details and Defense Strategies

FactoryTalk Linx versions 6.00, 6.10, and 6.11, RSLinx Classic v4.11.00 and prior, Connected Components Workbench: Version 12 and prior, ControlFLASH: Version 14 and later, ControlFLASH Plus: Version 1 and later, FactoryTalk Asset Centre: Version 9 and later, FactoryTalk Linx CommDTM: Version 1 and later, Studio 5000 Launcher: Version 31 and later, Studio 5000 Logix Designer software: Version 32 and prior are affected by a vulnerability allowing unauthorized code execution.

Understanding CVE-2020-11999

This CVE involves improper input validation in various Rockwell Automation software products.

What is CVE-2020-11999?

The vulnerability in the affected software versions allows attackers to execute unauthorized code and manipulate files or data by exploiting an exposed API call without proper file sanitation.

The Impact of CVE-2020-11999

The vulnerability could lead to unauthorized code execution and potential data manipulation by malicious actors.

Technical Details of CVE-2020-11999

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability arises from improper input validation in the affected Rockwell Automation software products, enabling attackers to execute unauthorized code.

Affected Systems and Versions

FactoryTalk Linx versions 6.00, 6.10, and 6.11
RSLinx Classic v4.11.00 and earlier
Connected Components Workbench: Version 12 and prior
ControlFLASH: Version 14 and later
ControlFLASH Plus: Version 1 and later
FactoryTalk Asset Centre: Version 9 and later
FactoryTalk Linx CommDTM: Version 1 and later
Studio 5000 Launcher: Version 31 and later
Studio 5000 Logix Designer software: Version 32 and prior

Exploitation Mechanism

The vulnerability allows attackers to exploit an exposed API call, providing files for processing without proper sanitation, enabling them to execute unauthorized code.

Mitigation and Prevention

Protect your systems from CVE-2020-11999 with the following steps:

Immediate Steps to Take

Apply security patches provided by Rockwell Automation.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security training for employees to recognize and report potential security threats.
Implement access controls and least privilege principles to restrict unauthorized access.

Patching and Updates

Ensure timely installation of security patches and updates to mitigate the vulnerability effectively.