CVE-2019-5140 : What You Need to Know

The Moxa AWK-3131A firmware version 1.13 is vulnerable to a command injection flaw in its iwwebs functionality, allowing attackers to remotely control the device.

Understanding CVE-2019-5140

This CVE involves a high-severity vulnerability in the Moxa AWK-3131A firmware version 1.13.

What is CVE-2019-5140?

CVE-2019-5140 is a command injection vulnerability in the Moxa AWK-3131A firmware version 1.13, enabling attackers to execute arbitrary commands remotely.

The Impact of CVE-2019-5140

The vulnerability has a CVSS base score of 8.8 (High), with high impacts on confidentiality, integrity, and availability. Attackers can exploit this flaw to gain control over the device.

Technical Details of CVE-2019-5140

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw allows a user to exploit a command injection vulnerability by using a specially crafted diagnostic script file name, leading to remote control of the device.

Affected Systems and Versions

Product: Moxa
Version: Moxa AWK-3131A firmware version 1.13

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Exploitation requires the attacker to be authenticated as a low privilege user and send specific commands.

Mitigation and Prevention

Protecting systems from CVE-2019-5140 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the firmware to a patched version if available.
Implement network segmentation to limit the attack surface.
Monitor and restrict user commands to prevent unauthorized access.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security training to educate users on safe practices.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Check for security advisories from Moxa and apply patches promptly.