CVE-2022-27462 in AVideo
Summary
by MITRE • 04/05/2022
Cross Site Scripting (XSS) vulnerability in objects/function.php in function getDeviceID in WWBN AVideo through 11.6, via the yptDevice parameter to view/include/head.php.
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Analysis
by VulDB Data Team • 04/08/2022
This cross site scripting vulnerability exists in the WWBN AVideo platform version 11.6 and earlier, specifically within the objects/function.php file where the getDeviceID function processes the yptDevice parameter. The flaw occurs when the application fails to properly sanitize user input before incorporating it into dynamic web page content, creating an avenue for malicious script execution. The vulnerability is triggered through the view/include/head.php component which receives the unvalidated yptDevice parameter, allowing attackers to inject malicious javascript code that executes in the context of other users' browsers. This represents a classic stored or reflected XSS vulnerability depending on how the parameter is subsequently handled within the application's data flow.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding practices within the AVideo platform's core functions. The getDeviceID function does not perform proper sanitization of the yptDevice parameter before it is rendered in the HTML head section, violating fundamental web security principles outlined in owasp top ten and the CWE-79 category for cross site scripting. The vulnerability allows attackers to execute arbitrary javascript code within the victim's browser session, potentially enabling session hijacking, credential theft, or redirection to malicious sites. This flaw operates at the application layer and requires no special privileges to exploit, making it particularly dangerous in environments where multiple users interact with the platform.
The operational impact of this vulnerability extends beyond simple script injection, as it can facilitate more sophisticated attacks within the AVideo ecosystem. An attacker could leverage this vulnerability to steal user sessions, modify content displayed to other users, or redirect them to phishing sites designed to capture credentials. The vulnerability affects all users of the affected AVideo versions who interact with pages that include the head.php component, potentially compromising the entire user base depending on the platform's usage patterns. Security researchers have noted that such vulnerabilities often serve as entry points for more complex attack chains, particularly when combined with other weaknesses in the application architecture. The attack vector requires minimal user interaction, typically involving the exploitation of a single vulnerable parameter, which increases the likelihood of successful exploitation in real-world scenarios.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The recommended approach includes sanitizing all user-supplied input parameters, particularly those used in dynamic content generation, and applying proper HTML escaping before rendering any user-provided data in web pages. Organizations should implement Content Security Policy headers to limit the execution of unauthorized scripts and ensure that all input parameters undergo strict validation against expected formats. Additionally, regular security audits and code reviews should be conducted to identify similar patterns in the codebase that could lead to comparable vulnerabilities. The fix should involve updating the getDeviceID function to properly escape or validate the yptDevice parameter before it is processed by the head.php component, aligning with security best practices established in the OWASP Application Security Verification Standard and the ATT&CK framework's web application exploitation techniques.