CVE-2015-9407 in xpinner-lite Plugin
Summary
by MITRE
The xpinner-lite plugin through 2.2 for WordPress has xpinner-lite.php XSS.
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Analysis
by VulDB Data Team • 12/27/2023
The xpinner-lite plugin vulnerability represents a critical cross-site scripting flaw that affects WordPress installations using versions 2.2 or earlier of this particular plugin. This vulnerability exists within the plugin's xpinner-lite.php file, which processes user input without proper sanitization or validation mechanisms. The flaw allows malicious actors to inject malicious scripts into web pages viewed by other users, creating a persistent threat vector that can compromise user sessions and data integrity. The vulnerability is particularly concerning because it affects a widely used content management system platform where plugins often have elevated privileges and access to sensitive data.
The technical implementation of this cross-site scripting vulnerability stems from insufficient input validation within the plugin's processing logic. When users interact with the xpinner-lite plugin functionality, specifically through parameters passed to the xpinner-lite.php script, the application fails to properly sanitize or escape user-supplied data before rendering it in web responses. This creates an environment where attackers can inject malicious javascript code that executes in the context of other users' browsers. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications. The flaw operates at the presentation layer where user input is directly incorporated into dynamic web content without appropriate security controls.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform session hijacking, steal cookies, redirect users to malicious sites, or even execute arbitrary commands on affected systems. When exploited, this vulnerability allows unauthorized individuals to manipulate the behavior of legitimate users' browsers, potentially leading to complete account compromise or data exfiltration. The attack surface is broad since any user who interacts with the plugin's functionality could be targeted, and the vulnerability affects the entire WordPress ecosystem where the plugin is installed. This creates cascading security implications for websites that rely on WordPress for content management, as compromised user sessions can lead to unauthorized modifications of website content or complete system takeover.
Mitigation strategies for this vulnerability require immediate action including updating to the latest plugin version where the XSS flaw has been patched, implementing proper input validation and output escaping mechanisms, and conducting comprehensive security audits of all installed WordPress plugins. Organizations should also consider implementing web application firewalls to detect and block malicious script injection attempts, as well as monitoring user access logs for suspicious activities. The remediation process must include thorough testing of the updated plugin to ensure compatibility with existing website functionality while maintaining security posture. This vulnerability serves as a reminder of the critical importance of keeping all web application components updated and following secure coding practices that prevent injection attacks through proper input sanitization and output encoding. The ATT&CK framework categorizes this vulnerability under the T1211 technique for exploitation of web application vulnerabilities, emphasizing the need for comprehensive security measures that protect against persistent threats in web environments.