CVE-2022-32286 in Mendix SAML Module
Summary
by MITRE • 06/14/2022
A vulnerability has been identified in Mendix SAML Module (Mendix 7 compatible) (All versions < V1.16.6), Mendix SAML Module (Mendix 8 compatible) (All versions < V2.2.2), Mendix SAML Module (Mendix 9 compatible) (All versions < V3.2.3). In certain configurations SAML module is vulnerable to Cross Site Scripting (XSS) attacks due to insufficient error message sanitation. This could allow an attacker to execute malicious code by tricking users into accessing a malicious link.
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Analysis
by VulDB Data Team • 06/15/2022
The vulnerability CVE-2022-32286 affects the Mendix SAML Module across multiple Mendix versions, representing a critical cross site scripting flaw that undermines the security of identity management systems. This vulnerability specifically targets the SAML module's handling of error messages, where insufficient input sanitization allows malicious payloads to persist and execute within user browsers. The affected configurations include Mendix 7, 8, and 9 compatible versions, with specific patch thresholds of V1.16.6, V2.2.2, and V3.2.3 respectively, indicating a widespread impact across the Mendix ecosystem.
The technical flaw manifests in the SAML module's inadequate validation and sanitization of error messages that are displayed to users during authentication processes. When SAML authentication fails or encounters malformed requests, the system generates error responses that should normally be harmless but instead contain user-controllable input without proper HTML escaping or sanitization. This creates an XSS vector where attackers can inject malicious scripts into error messages that are subsequently rendered in the victim's browser context. The vulnerability is particularly dangerous because SAML authentication is typically used in enterprise environments where users trust the authentication system, making social engineering attacks more effective.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with a means to compromise user sessions and potentially escalate privileges within the Mendix application environment. Attackers can craft malicious SAML requests that trigger error conditions containing malicious payloads, which then execute when users access the error pages. This attack vector aligns with CWE-79 Cross Site Scripting, specifically targeting the failure to sanitize output in error handling components. The vulnerability enables various attack patterns including session hijacking, data exfiltration, and privilege escalation within the application context.
Security professionals should prioritize immediate patching of affected Mendix SAML Module versions to address this vulnerability, as the attack surface includes any application utilizing the affected SAML functionality. The remediation strategy should include updating to the specified patched versions V1.16.6, V2.2.2, and V3.2.3 for their respective Mendix versions. Organizations should also implement additional monitoring for suspicious SAML error patterns and consider implementing Content Security Policy headers to provide defense in depth. From an ATT&CK perspective, this vulnerability maps to T1566 Phishing and T1059 Command and Scripting Interpreter, as attackers can leverage the XSS to deliver malicious payloads and execute commands within user browsers. The vulnerability demonstrates the critical importance of proper input validation and output sanitization in security-critical components like authentication modules.