CVE-2025-36728 in Remote Support Software
Summary
by MITRE • 07/25/2025
Cross-Site Request Forgery (CSRF) vulnerability in Simplehelp.This issue affects Simplehelp: before 5.5.11.
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Analysis
by VulDB Data Team • 07/25/2025
The CVE-2025-36728 vulnerability represents a critical cross-site request forgery flaw within the Simplehelp application platform, specifically impacting versions prior to 5.5.11. This vulnerability resides in the web application's insufficient validation of cross-origin requests, allowing malicious actors to exploit the trust relationship between authenticated users and the application. The flaw stems from the absence of proper anti-CSRF tokens or mechanisms that would verify the authenticity of requests originating from the legitimate application interface. Attackers can leverage this weakness to perform unauthorized actions on behalf of authenticated users, potentially leading to data manipulation, account takeovers, or privilege escalation within the Simplehelp environment. The vulnerability affects the core authentication and authorization mechanisms of the platform, undermining the fundamental security principles of web application design.
This CSRF vulnerability operates by exploiting the browser's automatic inclusion of authentication cookies with every request to the target domain. When a user is authenticated to Simplehelp, their browser maintains session cookies that are automatically sent with subsequent requests. An attacker can craft malicious web pages or emails containing hidden form submissions or crafted javascript requests that, when executed by an authenticated user, trigger unintended actions within the Simplehelp application. The flaw lacks proper request validation that would ensure requests originate from legitimate sources within the application's own domain. According to CWE-352, this represents a classic cross-site request forgery vulnerability where the application fails to validate that requests are initiated by the user's browser rather than by an attacker's malicious page. The vulnerability is particularly concerning because it operates at the application layer, bypassing traditional network-level security controls and directly targeting the user session management system.
The operational impact of this vulnerability extends beyond simple data theft or modification, potentially enabling complete account compromise and unauthorized access to sensitive support ticket systems. An attacker who successfully exploits this CSRF flaw could create, modify, or delete support tickets, access confidential customer information, manipulate user permissions, or even escalate privileges within the Simplehelp platform. The vulnerability affects the integrity and availability of the application's core services, potentially disrupting legitimate business operations while providing attackers with persistent access to the system. Organizations using Simplehelp versions prior to 5.5.11 face significant risk of unauthorized access to their support infrastructure, which could lead to data breaches, service disruption, and compliance violations. This vulnerability aligns with ATT&CK technique T1566.001 for credential access through phishing and social engineering, as attackers could use this flaw to manipulate user sessions without requiring direct credential compromise.
Mitigation strategies for CVE-2025-36728 must focus on implementing robust anti-CSRF protection mechanisms within the Simplehelp application. The most effective approach involves deploying unique, unpredictable tokens for each user session that are validated on every state-changing request. Organizations should ensure that all forms and API endpoints that modify application state require proper CSRF token validation before processing user requests. The fix should include implementing the same-origin policy enforcement, requiring referer headers validation, and implementing proper session management practices that prevent cross-origin request execution. Additionally, organizations should deploy comprehensive monitoring to detect unusual patterns of request behavior that might indicate CSRF attack attempts. The recommended solution aligns with OWASP Top 10 security controls and specifically addresses the requirements outlined in the Web Application Security section of NIST SP 800-53. Organizations must upgrade to Simplehelp version 5.5.11 or later, which includes the necessary CSRF protection mechanisms, and should conduct thorough security testing to ensure the fix properly addresses the vulnerability without introducing new security issues.