CVE-2020-8858 : Security Advisory and Response
Learn about CVE-2020-8858, a critical vulnerability in Moxa MGate 5105-MB-EIP firmware version 4.1 allowing remote code execution. Find mitigation steps and preventive measures here.
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Moxa MGate 5105-MB-EIP firmware version 4.1. Authentication is required to exploit this vulnerability. The specific flaw exists within the DestIP parameter within MainPing.asp. An attacker can leverage this vulnerability to execute code in the context of root.
Understanding CVE-2020-8858
This CVE involves a critical vulnerability in Moxa MGate 5105-MB-EIP firmware version 4.1 that allows remote code execution.
What is CVE-2020-8858?
CVE-2020-8858 is a security flaw that enables attackers to run arbitrary code on affected Moxa MGate 5105-MB-EIP devices, requiring authentication for exploitation.
The Impact of CVE-2020-8858
The vulnerability has a high impact, with a CVSS base score of 8.8, affecting confidentiality, integrity, and availability of the system.
Technical Details of CVE-2020-8858
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The flaw stems from improper validation of user-supplied input in the DestIP parameter of MainPing.asp, allowing attackers to execute system calls.
Affected Systems and Versions
- Product: Moxa MGate 5105-MB-EIP
- Version: Firmware version 4.1
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
Mitigation and Prevention
Protecting systems from CVE-2020-8858 is crucial to prevent unauthorized code execution.
Immediate Steps to Take
- Apply patches or updates provided by Moxa promptly.
- Implement strong authentication mechanisms to restrict unauthorized access.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update firmware and software to mitigate known vulnerabilities.
- Conduct security assessments and penetration testing to identify and address weaknesses.
Patching and Updates
- Stay informed about security advisories from Moxa and apply patches as soon as they are released.