CVE-2017-9816 in PRTG Network Monitor
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Paessler PRTG Network Monitor before 17.2.32.2279 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 11/08/2019
The vulnerability identified as CVE-2017-9816 represents a critical cross-site scripting flaw within Paessler PRTG Network Monitor software versions prior to 17.2.32.2279. This issue falls under the CWE-79 category of Cross-Site Scripting and exposes the network monitoring platform to potential exploitation by remote attackers. The vulnerability manifests through unspecified vectors that allow malicious actors to inject arbitrary web scripts or HTML content into the application's interface, creating a persistent security risk for organizations relying on this network monitoring solution.
The technical exploitation of this XSS vulnerability occurs when untrusted data is processed and rendered within the application's user interface without proper sanitization or encoding mechanisms. Attackers can craft malicious payloads that, when executed, can steal session cookies, redirect users to malicious sites, or perform unauthorized actions on behalf of authenticated users. The unspecified nature of the attack vectors suggests multiple potential entry points within the application's data handling processes, making the vulnerability particularly concerning as it could be exploited through various input fields, parameters, or API endpoints within the PRTG monitoring environment.
Organizations utilizing vulnerable versions of PRTG Network Monitor face significant operational risks from this vulnerability, as it can lead to complete compromise of the monitoring infrastructure. The impact extends beyond simple data theft to potential network disruption and unauthorized access to critical monitoring data. Attackers could leverage this vulnerability to gain insights into network configurations, monitor traffic patterns, or even manipulate monitoring alerts to hide malicious activities. The remote nature of the attack means that adversaries do not require physical access to the network or direct system compromise to exploit this weakness, making it particularly dangerous for organizations with remote monitoring capabilities or cloud-based deployments.
The vulnerability aligns with several ATT&CK techniques including T1059.007 for Command and Scripting Interpreter and T1566 for Phishing, as attackers can use the XSS flaw to deliver malicious payloads through crafted web requests or phishing campaigns. Organizations should implement immediate mitigation strategies including upgrading to the patched version 17.2.32.2279 or later, implementing proper input validation and output encoding mechanisms, and deploying web application firewalls to detect and block malicious payloads. Additionally, regular security assessments of network monitoring tools and comprehensive user education regarding suspicious web content are essential defensive measures to protect against similar vulnerabilities in the broader cybersecurity landscape.