CVE-2022-32772 in AVideo
Summary
by MITRE • 08/22/2022
A cross-site scripting (xss) vulnerability exists in the footer alerts functionality of WWBN AVideo 11.6 and dev master commit 3f7c0364. A specially-crafted HTTP request can lead to arbitrary Javascript execution. An attacker can get an authenticated user to send a crafted HTTP request to trigger this vulnerability.This vulnerability arrises from the "msg" parameter which is inserted into the document with insufficient sanitization.
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Analysis
by VulDB Data Team • 08/23/2022
The CVE-2022-32772 vulnerability represents a critical cross-site scripting flaw within the WWBN AVideo platform version 11.6 and its development master branch at commit 3f7c0364. This security weakness specifically targets the footer alerts functionality, which serves as a user interface component designed to display system notifications and messages to authenticated users. The vulnerability arises from inadequate input validation and sanitization mechanisms that fail to properly process user-supplied data before rendering it within the web application's HTML context. Attackers can exploit this flaw by crafting malicious HTTP requests that include specially formatted payloads in the msg parameter, which are then executed within the browser context of authenticated users who interact with the affected application.
The technical implementation of this vulnerability stems from improper sanitization of the msg parameter, which is directly inserted into the document without adequate protection against malicious script injection. This flaw falls under the CWE-79 category of Cross-Site Scripting, specifically representing a reflected XSS vulnerability where user input is immediately reflected back into the application's response without proper encoding or validation. The vulnerability is particularly dangerous because it requires minimal user interaction beyond the act of visiting a page containing the malicious payload, making it susceptible to automated exploitation through social engineering or compromised web pages. The attack vector is facilitated by the application's failure to implement proper output encoding or content security policies that would prevent the execution of unauthorized JavaScript code within the user's browser session.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform a wide range of malicious activities within the authenticated user's browser context. Successful exploitation allows attackers to steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious websites, or even install malware through browser-based attacks. The vulnerability is particularly concerning in the context of a video management platform where users may have elevated privileges, as it could potentially allow attackers to escalate their privileges or access sensitive content. The attack requires only that an authenticated user be induced to visit a malicious page or click on a crafted link, making it a significant risk for organizations relying on the platform for content management and user interaction. This vulnerability directly aligns with ATT&CK technique T1531 which focuses on establishing persistence through malicious scripts and T1059 which covers command and scripting interpreter usage.
Mitigation strategies for CVE-2022-32772 should prioritize immediate implementation of proper input sanitization and output encoding mechanisms throughout the application's codebase, particularly within the footer alerts functionality. The most effective remediation involves implementing comprehensive parameter validation that strips or encodes potentially dangerous characters before processing user input, along with the adoption of Content Security Policy headers to prevent unauthorized script execution. Organizations should also implement proper HTML encoding for all dynamic content rendered in the browser context and establish input validation routines that reject or sanitize any data containing script tags, event handlers, or other malicious constructs. The fix should include updating the application to a patched version that properly handles the msg parameter through secure coding practices, including the implementation of a whitelist-based approach for acceptable input values and the enforcement of strict output encoding for all user-supplied content. Additionally, security monitoring should be enhanced to detect unusual patterns in alert generation and user interactions that might indicate exploitation attempts, while regular security audits should verify that similar vulnerabilities do not exist in other application components that process user input.