CVE-2017-12126 in EDR-810
Summary
by MITRE
An exploitable cross-site request forgery vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP packet can cause cross-site request forgery. An attacker can create malicious HTML to trigger this vulnerability.
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Analysis
by VulDB Data Team • 03/13/2023
The vulnerability identified as CVE-2017-12126 represents a critical cross-site request forgery flaw within the Moxa EDR-810 network security device running firmware version V4.1 build 17030317. This device operates as a web server interface for network management and monitoring purposes, making it a prime target for attackers seeking unauthorized access to industrial control systems. The vulnerability stems from insufficient validation of HTTP requests originating from external sources, specifically failing to implement proper anti-CSRF mechanisms that would normally protect against malicious request manipulation.
This particular flaw allows attackers to craft malicious HTML content that, when executed by an authenticated user, can perform unauthorized actions on the affected device without the user's knowledge or consent. The technical implementation of this vulnerability occurs at the web server layer where HTTP requests are processed, lacking the necessary cryptographic tokens or referer validation that would normally prevent CSRF attacks. The vulnerability is classified under CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications and services.
The operational impact of this vulnerability extends beyond simple data theft or modification, as it provides attackers with potential access to critical industrial network infrastructure. In industrial environments where Moxa EDR-810 devices are deployed for security monitoring and network segmentation, successful exploitation could lead to complete compromise of network security controls, potentially enabling lateral movement, data exfiltration, or disruption of critical operations. The attack vector requires minimal sophistication since attackers only need to create malicious HTML content that can be delivered through social engineering or direct user interaction with compromised web pages.
Mitigation strategies for CVE-2017-12126 should include immediate firmware updates from Moxa to address the CSRF implementation gap, along with network segmentation to limit exposure of the affected device to untrusted networks. Organizations should also implement web application firewalls and ensure proper authentication controls are in place. The vulnerability aligns with ATT&CK technique T1566, which covers social engineering through malicious web content, and T1071, covering application layer protocols. Additional protective measures include disabling unnecessary web interfaces, implementing strict access controls, and conducting regular security assessments of industrial control system components to identify similar implementation flaws that could compromise operational technology environments.