CVE-2022-1068 : Security Advisory and Response

Modbus Tools Modbus Slave is affected by a stack-based buffer overflow vulnerability that allows attackers to crash the program using long character strings.

Understanding CVE-2022-1068

This CVE impacts Modbus Tools Modbus Slave versions 7.4.2 and prior, exposing systems to potential crashes due to a stack-based buffer overflow in the registration field.

What is CVE-2022-1068?

The vulnerability in Modbus Tools Modbus Slave versions 7.4.2 and below enables a stack-based buffer overflow in the registration field, leading to program crashes with the use of long character strings.

The Impact of CVE-2022-1068

With a CVSS base score of 5.5/10, this vulnerability has a medium severity impact, requiring user interaction and causing high availability impact.

Technical Details of CVE-2022-1068

Modbus Tools Modbus Slave is susceptible to a stack-based buffer overflow due to insufficient input validation in the registration field.

Vulnerability Description

The stack-based buffer overflow vulnerability in Modbus Slave allows attackers to crash the system by inputting long character strings.

Affected Systems and Versions

Modbus Tools Modbus Slave versions 7.4.2 and earlier are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting and submitting long character strings to the registration field, triggering a buffer overflow and potentially crashing the program.

Mitigation and Prevention

To address CVE-2022-1068, immediate action is required to update Modbus Tools Modbus Slave to version 7.4.3 or later.

Immediate Steps to Take

Users are strongly advised to apply the recommended patch and upgrade to version 7.4.3 or above to mitigate the vulnerability.

Long-Term Security Practices

Apart from patching, employing secure coding practices, implementing input validation, and monitoring for unusual program behavior can enhance overall system security.

Patching and Updates

Modbus Tools has released a fix for the vulnerability in version 7.4.3, safeguarding systems against stack-based buffer overflow attacks.