CVE-2022-34656 in Poll, Survey, Questionnaire and Voting System Plugin
Summary
by MITRE • 09/06/2022
Authenticated (admin+) Cross-Site Scripting (XSS) vulnerability in wpdevart Poll, Survey, Questionnaire and Voting system plugin <= 1.7.4 at WordPress.
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Analysis
by VulDB Data Team • 09/07/2022
The CVE-2022-34656 vulnerability represents a critical authenticated cross-site scripting flaw within the wpdevart Poll, Survey, Questionnaire and Voting system WordPress plugin. This vulnerability affects versions up to and including 1.7.4, making it a significant security concern for WordPress administrators and users who rely on this plugin for survey and polling functionality. The flaw exists in the plugin's handling of user input within administrative interfaces, specifically when processing data from poll and survey components. The vulnerability is classified as authenticated XSS because it requires an attacker to possess administrative privileges or higher access level within the WordPress environment, which significantly reduces the attack surface but does not eliminate the risk entirely.
The technical implementation of this vulnerability stems from insufficient input sanitization and output encoding within the plugin's administrative panels. When administrators create or modify polls, surveys, or questionnaires through the WordPress dashboard, the plugin fails to properly sanitize user-supplied data before rendering it in the HTML output context. This allows malicious actors with admin-level access to inject malicious JavaScript code into poll configurations, survey questions, or response handling mechanisms. The vulnerability specifically impacts the plugin's ability to properly escape special characters and HTML entities when displaying user-generated content, creating opportunities for persistent XSS attacks that can execute arbitrary scripts in the context of the victim's browser. This flaw aligns with CWE-79, which describes improper neutralization of input during web page generation, making it a classic example of client-side injection vulnerability.
The operational impact of this vulnerability extends beyond simple data corruption or display issues, as it provides attackers with the capability to escalate privileges and maintain persistent access within compromised WordPress environments. Once an attacker gains admin access through this vulnerability, they can manipulate survey results, alter poll configurations, and potentially exfiltrate sensitive data from the WordPress installation. The attack vector becomes particularly dangerous because administrators frequently interact with the plugin's administrative interfaces, making it a prime target for privilege escalation attacks. The vulnerability also enables attackers to execute malicious scripts that can steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. According to ATT&CK framework, this vulnerability maps to T1548.001 for privilege escalation and T1059.007 for script execution, demonstrating how the XSS vulnerability can serve as a foundation for broader exploitation strategies.
Mitigation strategies for CVE-2022-34656 should prioritize immediate plugin updates to versions that have addressed the XSS vulnerability, as wpdevart has released patches for this specific flaw. Organizations should implement strict access controls and privilege management to minimize the attack surface, ensuring that only trusted administrators have access to the plugin's administrative interfaces. Additionally, implementing Content Security Policy (CSP) headers can provide an additional layer of protection against XSS attacks by restricting script execution and preventing unauthorized code injection. Regular security audits and monitoring of WordPress plugin installations should be conducted to identify and remediate similar vulnerabilities across the entire WordPress ecosystem. Network segmentation and web application firewalls can also help detect and prevent exploitation attempts targeting this vulnerability, while regular backup procedures ensure rapid recovery in case of successful exploitation attempts. The vulnerability serves as a reminder of the importance of keeping WordPress plugins updated and maintaining comprehensive security hygiene practices within WordPress environments.