CVE-2016-10969 in supportflow Plugin
Summary
by MITRE
The supportflow plugin before 0.7 for WordPress has XSS via a discussion ticket title.
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Analysis
by VulDB Data Team • 12/25/2023
The CVE-2016-10969 vulnerability represents a cross-site scripting flaw in the supportflow plugin for WordPress systems prior to version 0.7. This vulnerability specifically affects the handling of discussion ticket titles within the plugin's interface, creating a potential vector for malicious attackers to execute harmful scripts against unsuspecting users. The vulnerability stems from inadequate input validation and output sanitization mechanisms within the plugin's codebase, particularly when processing user-supplied data for display in web interfaces. The supportflow plugin, designed to manage customer support tickets within WordPress environments, failed to properly escape or filter special characters in ticket titles before rendering them in HTML contexts, thereby exposing the system to XSS attacks.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious ticket title containing script tags or other malicious code that gets executed in the browser of any user who views the affected ticket. This type of vulnerability falls under CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security where user input is not properly sanitized before being rendered in web pages. The flaw demonstrates a classic case of reflected cross-site scripting where the malicious payload is reflected back to the user's browser through the vulnerable application interface. The vulnerability is particularly concerning in WordPress environments where multiple users may have access to support ticket systems, as it allows attackers to potentially steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users.
The operational impact of CVE-2016-10969 extends beyond simple script execution, as it can enable more sophisticated attack vectors including session hijacking and privilege escalation within the WordPress environment. When an attacker successfully injects malicious code through a ticket title, they can potentially capture user authentication tokens, gain unauthorized access to support ticket systems, or even escalate privileges if the supportflow plugin has administrative capabilities. The vulnerability affects all WordPress installations using the supportflow plugin version 0.7 or earlier, making it particularly dangerous as it could be exploited across numerous websites without requiring complex attack chains. From an attack framework perspective, this vulnerability aligns with techniques described in the MITRE ATT&CK framework under the T1059.001 - Command and Scripting Interpreter: PowerShell and T1566 - Phishing categories, as attackers can leverage the XSS to deliver malicious payloads or redirect users to phishing sites. The exploitation typically requires minimal user interaction, as simply viewing the malicious ticket title in the support interface triggers the script execution.
Mitigation strategies for CVE-2016-10969 primarily involve upgrading the supportflow plugin to version 0.7 or later, which includes proper input sanitization and output escaping mechanisms. Organizations should implement comprehensive patch management procedures to ensure all WordPress plugins remain current with security updates, as this vulnerability demonstrates the critical importance of keeping third-party components updated. Additional protective measures include implementing Content Security Policy headers to limit script execution, conducting regular security audits of WordPress plugins, and establishing input validation rules that prevent special characters from being processed in ticket title fields. The vulnerability also highlights the necessity of following secure coding practices such as those outlined in the OWASP Top Ten and the CERT/CC Secure Coding Standards, which emphasize the importance of input validation, output encoding, and proper error handling in web applications. Security teams should also consider implementing web application firewalls to detect and block suspicious script injection attempts, while monitoring for anomalous user behavior that might indicate exploitation attempts.