CVE-2019-7330 in ZoneMinder
Summary
by MITRE
Reflected Cross Site Scripting (XSS) exists in ZoneMinder through 1.32.3, allowing an attacker to execute HTML or JavaScript code via a vulnerable 'show' parameter value in the view frame (frame.php) because proper filtration is omitted.
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Analysis
by VulDB Data Team • 07/06/2023
The vulnerability identified as CVE-2019-7330 represents a critical reflected cross site scripting flaw in ZoneMinder version 1.32.3 and earlier. This vulnerability resides within the web interface of the video surveillance system, specifically in the frame.php component that handles the 'show' parameter. The flaw allows attackers to inject malicious scripts that execute in the context of other users' browsers, creating a significant security risk for organizations relying on ZoneMinder for surveillance operations. The vulnerability is classified under CWE-79 as a failure to sanitize user input, making it a classic reflected XSS attack vector where malicious code is reflected back from the server to the user's browser.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing JavaScript code within the 'show' parameter of the frame.php endpoint. When a victim clicks this crafted link, the server reflects the malicious payload back to the victim's browser without proper input validation or output encoding. The vulnerability specifically affects the view frame functionality that displays surveillance footage, making it particularly dangerous as users who access compromised links could unknowingly execute arbitrary code in their browser context. This type of attack requires social engineering to deliver the malicious payload, as users must actively click on the crafted URLs.
The operational impact of CVE-2019-7330 extends beyond simple script execution, as it could enable attackers to perform session hijacking, steal authentication cookies, redirect users to malicious sites, or even execute more sophisticated attacks such as credential theft. Organizations using ZoneMinder for security monitoring face the risk of unauthorized access to their surveillance systems, potentially allowing attackers to view live feeds, manipulate recordings, or gain administrative privileges. The vulnerability affects the integrity and confidentiality of surveillance data, which is particularly concerning given that ZoneMinder systems are often deployed in sensitive environments requiring robust security controls. This vulnerability aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments and T1059.007 for command and scripting interpreter for JavaScript execution.
Mitigation strategies for this vulnerability include implementing proper input validation and output encoding for all user-supplied parameters, particularly those used in dynamic content generation. Organizations should immediately upgrade to ZoneMinder version 1.32.4 or later, which includes patches addressing this specific vulnerability. Additionally, implementing Content Security Policy headers, using proper HTML encoding for dynamic content, and conducting regular security audits of web applications can significantly reduce the risk of exploitation. Network administrators should also consider implementing web application firewalls to detect and block malicious payloads attempting to exploit this vulnerability. The vulnerability demonstrates the importance of input validation practices and proper output encoding as fundamental security controls that should be implemented across all web applications to prevent XSS attacks.