Learn about CVE-2020-6989, a buffer overflow vulnerability in Moxa PT-7528 and PT-7828 series firmware allowing remote attackers to cause denial-of-service or execute arbitrary code. Find mitigation steps and prevention measures.
In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, a buffer overflow in the web server allows remote attackers to cause a denial-of-service condition or execute arbitrary code.
Understanding CVE-2020-6989
This CVE involves a stack-based buffer overflow vulnerability in Moxa PT-7528 and PT-7828 series firmware.
What is CVE-2020-6989?
The vulnerability in the web server of the affected firmware versions enables attackers to trigger a denial-of-service state or execute unauthorized code.
The Impact of CVE-2020-6989
The exploitation of this vulnerability can lead to severe consequences, including service disruption and unauthorized access to the system.
Technical Details of CVE-2020-6989
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
A buffer overflow in the web server of Moxa PT-7528 and PT-7828 series firmware versions 4.0 and 3.9 or lower allows for potential denial-of-service attacks and arbitrary code execution.
Affected Systems and Versions
Exploitation Mechanism
The vulnerability can be exploited remotely by attackers to either disrupt services or gain unauthorized access by executing malicious code.
Mitigation and Prevention
Protecting systems from CVE-2020-6989 requires immediate actions and long-term security measures.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates
Regularly check for security advisories and updates from Moxa to ensure the latest patches are applied to mitigate the risk of exploitation.