CVE-2022-32771 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 "success" parameter which is inserted into the document with insufficient sanitization.
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Analysis
by VulDB Data Team • 08/23/2022
The CVE-2022-32771 vulnerability represents a critical cross-site scripting flaw within the WWBN AVideo platform version 11.6 and its development branch up to commit 3f7c0364. This security weakness specifically targets the footer alerts functionality, which serves as a user interface element designed to display system messages and notifications to authenticated users. The vulnerability arises from inadequate input validation and sanitization processes that fail to properly process user-supplied data before incorporating it into the web application's dynamic content. The flaw enables attackers to inject malicious javascript code through crafted HTTP requests that exploit the application's failure to sanitize the "success" parameter.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious HTTP request containing specially formatted javascript code within the success parameter. When the vulnerable application processes this parameter and inserts it directly into the document without proper sanitization, the embedded javascript executes within the context of the victim's browser session. This creates a persistent cross-site scripting attack vector that can be triggered when authenticated users navigate to pages containing the maliciously crafted alerts. The vulnerability specifically manifests in the application's failure to implement proper output encoding or sanitization mechanisms when handling user-controllable input from the success parameter, which is typically used to display success messages to users.
The operational impact of CVE-2022-32771 extends beyond simple script execution, as it enables attackers to perform session hijacking, steal user credentials, manipulate application data, and potentially escalate privileges within the affected system. Authenticated users who encounter the maliciously crafted alerts become unwitting participants in the attack, as their browsers execute the injected javascript code within their legitimate session context. This vulnerability aligns with CWE-79, which describes cross-site scripting flaws resulting from insufficient sanitization of user-supplied data, and represents a classic example of how insecure data handling can compromise user security and application integrity. The attack vector requires social engineering to convince victims to visit pages containing the malicious content, making it particularly dangerous in environments where users frequently interact with web applications.
Security mitigations for CVE-2022-32771 should focus on implementing comprehensive input sanitization and output encoding mechanisms throughout the application's data flow. The most effective remediation involves properly escaping or encoding all user-controllable data before insertion into the document, particularly the success parameter within the footer alerts functionality. This approach aligns with ATT&CK technique T1566, which addresses social engineering attacks that exploit web application vulnerabilities. Organizations should implement Content Security Policy headers to limit script execution, employ proper parameter validation, and conduct regular security testing to identify similar input validation flaws. Additionally, developers should follow secure coding practices that emphasize input sanitization and output encoding as fundamental security controls to prevent similar vulnerabilities from emerging in future versions of the application.