CVE-2019-7129 in Experience Manager Forms
Summary
by MITRE
Adobe Experience Manager Forms versions 6.2, 6.3 and 6.4 have a stored cross-site scripting vulnerability. Successful exploitation could lead to sensitive information disclosure.
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Analysis
by VulDB Data Team • 06/17/2020
Adobe Experience Manager Forms versions 6.2, 6.3, and 6.4 contain a stored cross-site scripting vulnerability that represents a significant security risk for organizations relying on these platforms. This vulnerability falls under the CWE-79 category of Cross-Site Scripting and aligns with the ATT&CK technique T1190 - Exploit Public-Facing Application. The flaw allows attackers to inject malicious scripts into form fields that are then executed when other users view or interact with these forms, creating a persistent threat vector that can affect multiple users over time.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the form processing components of Adobe Experience Manager. When users submit data through forms, the system fails to properly sanitize or escape potentially malicious content before storing it in the backend database. This stored data is then retrieved and displayed without adequate protection measures, allowing attackers to craft malicious payloads that can execute in the context of other users' browsers. The vulnerability is particularly dangerous because it enables attackers to establish persistent footholds within the application environment, potentially allowing for session hijacking, credential theft, or further exploitation of the system.
The operational impact of this vulnerability extends beyond simple script execution, as it can lead to comprehensive sensitive information disclosure across multiple organizational domains. Attackers can leverage this vulnerability to access user session cookies, potentially gaining unauthorized access to administrative functions or sensitive customer data. The stored nature of the vulnerability means that once exploited, the malicious scripts remain active until manually removed, providing attackers with prolonged access to the target environment. This persistent threat vector significantly increases the potential for data breaches, privilege escalation, and long-term compromise of the Adobe Experience Manager infrastructure.
Organizations should implement immediate mitigations including applying the latest security patches provided by Adobe, which address the input validation gaps in the affected versions. Network segmentation and web application firewalls should be deployed to monitor and filter malicious traffic patterns associated with XSS attacks. Input sanitization should be enhanced at multiple layers including client-side validation, server-side filtering, and proper output encoding mechanisms. Security teams should conduct comprehensive vulnerability assessments to identify all affected form components and implement regular security testing to prevent similar issues. The ATT&CK framework suggests implementing defensive measures such as Content Security Policy headers and regular security monitoring to detect and prevent exploitation attempts. Additionally, user education regarding suspicious form submissions and regular security updates should be emphasized to reduce the attack surface and improve overall security posture.