Multiple web server vulnerabilities affect EDS-405A version 3.5 and earlier, as well as EDS-408A Series version 3.6 and earlier. These vulnerabilities arise from insufficient input validation and improper privilege management. An attacker could exploit these vulnerabilities by sending crafted HTTP input to the web service. Successful exploitation could lead to a denial-of-service attack, remote code execution, and privilege escalation. 

The identified vulnerability types and potential impacts are shown below:

Vulnerability Scoring Details 

Affected Products:

The affected products and firmware versions are shown below.

Solutions:

Moxa has developed appropriate solutions to address the vulnerabilities. The solutions for affected products are shown below.

Mitigation:

• Minimize network exposure to ensure the device is not accessible from the Internet. 
• When remote access is required, use secure methods such as Virtual Private Networks (VPNs). 
• Since all the above vulnerabilities originate from the web service, it is recommended to temporarily disable the web service after completing configuration. This will prevent further damage from these vulnerabilities until the patch or updated firmware is installed.  

Products That Are Not Vulnerable:

Only the products listed in the Affected Products section of this advisory are known to be affected by this vulnerability.

Acknowledgment:

We would like to express our appreciation to Erwin Paternotte of Applied Risk for reporting the vulnerability, working with us to enhance the security of our products, and helping us provide better service to our customers. 

Revision History: