CVE-2015-3970 in UMG
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the web interface on Janitza UMG 508, 509, 511, 604, and 605 devices allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/23/2018
The CVE-2015-3970 vulnerability represents a critical security flaw affecting multiple models of Janitza power monitoring devices including the UMG 508, 509, 511, 604, and 605 series. These industrial devices are commonly deployed in electrical power distribution systems for monitoring and data acquisition purposes, making them attractive targets for cyber attackers seeking to compromise industrial control systems. The vulnerability manifests as multiple cross-site scripting flaws within the web interface components of these devices, creating a pathway for remote exploitation without requiring authentication or physical access to the hardware.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the web interface of these monitoring devices. Attackers can exploit unspecified vectors to inject malicious web scripts or HTML code directly into the device's web interface, which then executes in the context of authenticated users who access the device's management interface. This class of vulnerability maps directly to CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security that allows attackers to inject malicious content into web pages viewed by other users. The attack surface is particularly concerning given that these devices are typically accessible over the network and may be exposed to untrusted network segments.
The operational impact of this vulnerability extends beyond simple web interface compromise, as these devices serve critical functions in power distribution infrastructure. An attacker who successfully exploits this vulnerability could potentially manipulate monitoring data, disrupt system operations, or use the compromised device as a pivot point for further attacks within the industrial network. The web interface of these monitoring devices often contains sensitive operational data and configuration parameters that could be extracted or modified, potentially leading to unauthorized access to critical power system controls. From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1566 - Phishing, as attackers could craft malicious web pages that exploit this vulnerability to gain access to the industrial network. The compromised devices may also serve as staging points for more sophisticated attacks targeting the broader industrial control system environment.
Mitigation strategies for CVE-2015-3970 should include immediate firmware updates from Janitza to address the identified cross-site scripting vulnerabilities. Network segmentation and access controls should be implemented to limit access to these devices to authorized personnel only, while also implementing web application firewalls to detect and block malicious script injection attempts. Regular security assessments of industrial control systems should be conducted to identify similar vulnerabilities in other networked devices. Organizations should also implement monitoring solutions that can detect anomalous behavior in these devices, as the exploitation of XSS vulnerabilities may generate unusual network traffic patterns or data access patterns that could indicate compromise. The vulnerability highlights the importance of secure coding practices in industrial devices and the necessity of conducting thorough security testing before deployment in critical infrastructure environments.