CVE-2019-19306 in CRM Lead Magnet Plugin
Summary
by MITRE
The Zoho CRM Lead Magnet plugin 1.6.9.1 for WordPress allows XSS via module, EditShortcode, or LayoutName.
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Analysis
by VulDB Data Team • 02/28/2024
The vulnerability identified as CVE-2019-19306 affects the Zoho CRM Lead Magnet plugin version 1.6.9.1 for WordPress systems, representing a cross-site scripting flaw that poses significant security risks to affected websites. This vulnerability specifically resides within the plugin's handling of user input parameters including module, EditShortcode, and LayoutName, which are processed without adequate sanitization or validation. The issue stems from the plugin's failure to properly escape or filter data submitted through these parameters, creating opportunities for malicious actors to inject malicious scripts into web pages viewed by other users.
The technical nature of this vulnerability aligns with CWE-79, which defines cross-site scripting as a weakness occurring when an application includes untrusted data in a new web page without proper validation or escaping, or updates an existing web page with user-provided data without proper sanitization. This weakness allows attackers to execute scripts in the context of the victim's browser, potentially leading to session hijacking, defacement of web pages, or redirection to malicious sites. The vulnerability operates through the plugin's shortcode processing functionality where user-supplied parameters are directly incorporated into HTML output without appropriate security measures.
From an operational perspective, this vulnerability presents a substantial risk to WordPress sites utilizing the Zoho CRM Lead Magnet plugin, as it enables attackers to exploit the XSS flaw to compromise user sessions and potentially gain unauthorized access to sensitive CRM data. The attack vector is particularly concerning because it involves parameters that are commonly used in plugin functionality, making it difficult for administrators to identify and mitigate the vulnerability through simple configuration changes. Attackers can craft malicious URLs containing script payloads that, when executed by unsuspecting users, can steal cookies, modify page content, or redirect users to phishing sites that mimic legitimate Zoho CRM interfaces.
The impact of this vulnerability extends beyond simple script execution, as it can facilitate more sophisticated attacks within the context of the affected WordPress environment. According to ATT&CK framework category T1531, this vulnerability could enable credential access through session hijacking, while T1213 covers data from information repositories that could be compromised through unauthorized access to CRM data. The vulnerability particularly affects organizations relying on Zoho CRM integration for lead management, as successful exploitation could allow attackers to access lead data, customer information, and potentially manipulate the lead capture forms that the plugin manages.
Mitigation strategies for CVE-2019-19306 should prioritize immediate plugin updates to versions that address the XSS vulnerability, as the vendor has likely released patches to resolve the issue. System administrators should implement input validation and output escaping measures to prevent malicious data from being processed through the vulnerable parameters. Additional protective measures include implementing content security policies to limit script execution, monitoring for suspicious URL patterns, and conducting regular security audits of installed plugins to identify similar vulnerabilities. Organizations should also consider implementing web application firewalls to detect and block malicious payloads attempting to exploit this vulnerability, while maintaining updated threat intelligence feeds to identify emerging attack patterns targeting WordPress plugins with similar XSS weaknesses.