CVE-2019-7345 in ZoneMinder
Summary
by MITRE
Self - Stored Cross Site Scripting (XSS) exists in ZoneMinder through 1.32.3, as the view 'options' (options.php) does no input validation for the WEB_TITLE, HOME_URL, HOME_CONTENT, or WEB_CONSOLE_BANNER value, allowing an attacker to execute HTML or JavaScript code. This relates to functions.php.
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Analysis
by VulDB Data Team • 07/06/2023
The vulnerability described in CVE-2019-7345 represents a critical self-stored cross site scripting flaw within ZoneMinder version 1.32.3 and earlier. This vulnerability specifically affects the options.php web interface where administrative users can configure various system parameters including WEB_TITLE, HOME_URL, HOME_CONTENT, and WEB_CONSOLE_BANNER values. The flaw stems from inadequate input validation mechanisms that fail to sanitize user-provided data before storing it within the application's configuration system, creating a persistent XSS vector that can be exploited by attackers to inject malicious scripts.
The technical implementation of this vulnerability resides in the functions.php component which handles the processing of these configuration parameters without proper sanitization or encoding of potentially malicious input. When administrators or authenticated users modify these settings through the web interface, the application stores the raw input without validating or escaping special characters that could be interpreted as HTML or JavaScript code. This creates a scenario where an attacker who gains access to administrative privileges or can influence configuration settings can inject malicious payloads that will execute in the context of other users' browsers when they view the affected pages.
The operational impact of this vulnerability extends beyond simple script execution as it represents a persistent threat that can affect all users who access the ZoneMinder interface. Attackers can leverage this vulnerability to steal session cookies, perform unauthorized actions on behalf of victims, redirect users to malicious websites, or even execute more sophisticated attacks such as credential theft or privilege escalation within the application. The self-stored nature of the vulnerability means that the malicious code persists in the application configuration, making it particularly dangerous as it can affect users long after the initial attack vector is exploited.
Security professionals should note that this vulnerability aligns with CWE-79 which specifically addresses cross site scripting flaws in web applications. The attack pattern follows typical XSS exploitation techniques where unvalidated input is stored and later reflected to users, creating a persistent threat vector. From an ATT&CK framework perspective, this vulnerability maps to T1059.007 for script execution and T1566 for social engineering through malicious web content. Organizations should implement immediate mitigations including input validation and output encoding for all configuration parameters, regular security audits of web application interfaces, and comprehensive user access controls to limit administrative privileges to trusted personnel only.
The remediation strategy for this vulnerability requires implementing proper input sanitization routines that validate and encode all user-provided data before storage, particularly for parameters that are later rendered in web interfaces. This includes implementing proper HTML entity encoding for configuration values that are displayed in user interfaces, establishing strict input validation rules for all configurable parameters, and conducting regular security testing of web application components to identify similar vulnerabilities. Additionally, organizations should consider implementing web application firewalls and content security policies to provide additional layers of protection against XSS attacks, while also ensuring that administrative interfaces require strong authentication mechanisms and regular security updates to prevent unauthorized access to configuration functions.