CVE-2024-36196 in Experience Manager
Summary
by MITRE • 06/13/2024
Adobe Experience Manager versions 6.5.20 and earlier are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.
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Analysis
by VulDB Data Team • 03/23/2025
Adobe Experience Manager represents a comprehensive content management platform widely adopted by enterprises for digital experience management and web publishing operations. The platform serves as a central hub for creating, managing, and delivering digital content across multiple channels while providing robust features for form handling and user interaction. Organizations rely heavily on AEM's form capabilities to collect user data through various input mechanisms including text fields, dropdown menus, and rich text editors. The vulnerability in question specifically targets the form processing functionality within these versions of the platform, creating a critical security gap that affects the integrity of user input validation and sanitization mechanisms. This flaw exists within the core form handling components that process and store user-submitted data, making it particularly dangerous as it operates at the data persistence layer where malicious inputs can be stored and later executed.
The technical implementation of this stored XSS vulnerability stems from inadequate input sanitization and output encoding within the AEM form processing pipeline. When users submit data through web forms, the platform should properly validate and sanitize all input fields to prevent malicious scripts from being stored in the system. However, in versions 6.5.20 and earlier, the sanitization routines fail to properly handle certain character sequences and encoding patterns that allow attackers to inject malicious JavaScript code. The vulnerability specifically affects form fields where user input is persisted and subsequently rendered back to users without proper HTML encoding. This creates a persistent threat where attackers can craft malicious payloads that will execute whenever any user views the page containing the compromised form data. The attack vector exploits the fundamental principle of XSS vulnerabilities where untrusted data flows into the application's HTML output, with the stored nature of this vulnerability amplifying its impact by allowing the malicious script to affect multiple users over time.
The operational impact of this vulnerability extends beyond simple script execution, as it creates a persistent backdoor for attackers to compromise user sessions and perform unauthorized actions within the AEM environment. When a victim browses to a page containing the stored malicious script, the JavaScript code executes in their browser context, potentially stealing session cookies, redirecting users to malicious sites, or performing actions on behalf of the user. Attackers can leverage this vulnerability to escalate privileges, access sensitive content, or establish persistent access to the AEM system. The stored nature of the vulnerability means that even after the initial injection, the malicious code remains active and continues to affect users who encounter the compromised content. This characteristic makes the vulnerability particularly dangerous in enterprise environments where AEM systems handle sensitive business data and user information. The impact is further amplified when considering that AEM is often integrated with other enterprise systems, potentially allowing attackers to use this initial foothold to move laterally within the network infrastructure.
Organizations should immediately implement comprehensive mitigation strategies to address this vulnerability across their AEM deployments. The primary recommendation involves applying the vendor-provided security patches and updates that specifically address the XSS vulnerability in the affected versions. Additionally, implementing robust input validation and output encoding mechanisms at multiple layers of the application architecture provides defense-in-depth protection. Security teams should conduct thorough audits of all form processing components within their AEM environments to identify and remediate any similar vulnerabilities. Regular security testing including dynamic application security testing and manual penetration testing should be implemented to detect potential XSS vectors. The implementation of Content Security Policy headers and proper HTML encoding for all user-generated content helps prevent exploitation even if other defenses fail. Organizations should also establish monitoring procedures to detect unauthorized modifications to form data and implement proper access controls to limit who can submit content to form fields. This vulnerability aligns with CWE-79 which specifically addresses Cross-Site Scripting flaws in software applications. From an ATT&CK framework perspective, this vulnerability maps to T1566.001 for initial access through malicious web content and potentially T1071.001 for application layer protocol usage. The attack chain typically begins with an attacker identifying vulnerable form fields, crafting malicious payloads, and then executing the attack through user interaction with the compromised content, making user education and awareness programs essential components of the overall security strategy.