CVE-2019-6992 in ZoneMinder
Summary
by MITRE
A stored-self XSS exists in web/skins/classic/views/controlcaps.php of ZoneMinder through 1.32.3, allowing an attacker to execute HTML or JavaScript code in a vulnerable field via a long NAME or PROTOCOL to the index.php?view=controlcaps URI.
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Analysis
by VulDB Data Team • 07/03/2023
The vulnerability identified as CVE-2019-6992 represents a stored cross-site scripting flaw within ZoneMinder version 1.32.3 and earlier, specifically affecting the web/skins/classic/views/controlcaps.php component. This issue arises from insufficient input validation and output encoding mechanisms within the web application's control capabilities interface, creating a persistent security weakness that can be exploited by malicious actors to inject and execute arbitrary code within the context of authenticated users' browsers.
The technical implementation of this vulnerability occurs through the manipulation of the NAME or PROTOCOL parameters within the index.php?view=controlcaps URI endpoint. When these parameters contain malicious HTML or JavaScript content, the application fails to properly sanitize or encode the input before storing it within the database or rendering it in subsequent user interactions. This stored data is then served back to authenticated users without adequate security measures, enabling the execution of malicious scripts in their browser context. The vulnerability is classified as a stored XSS due to the persistence of the malicious payload, which remains active until manually removed from the application's data store.
The operational impact of CVE-2019-6992 extends beyond simple script execution, as it can enable attackers to perform a wide range of malicious activities including session hijacking, credential theft, data exfiltration, and privilege escalation within the ZoneMinder environment. Attackers can leverage this vulnerability to gain unauthorized access to surveillance systems, potentially compromising the entire security infrastructure of organizations relying on ZoneMinder for video monitoring and access control. The vulnerability affects authenticated users with sufficient privileges to access the control capabilities interface, making it particularly dangerous in environments where administrative access is required for system configuration.
Security professionals should recognize this vulnerability as a variant of CWE-79 which specifically addresses cross-site scripting flaws in web applications. The attack vector aligns with techniques described in the MITRE ATT&CK framework under the T1059.007 sub-technique for scripting and T1566 for credential access through social engineering. Organizations should implement immediate mitigations including input validation, output encoding, and proper parameter sanitization within the affected component. The recommended approach involves implementing strict validation rules for NAME and PROTOCOL parameters, implementing Content Security Policy headers, and ensuring proper HTML entity encoding of all user-supplied data before storage or display. Additionally, regular security audits and input validation testing should be conducted to prevent similar vulnerabilities from emerging in other parts of the application.