CVE-2019-8080 in Experience Manager
Summary
by MITRE
Adobe Experience Manager versions 6.4 and 6.3 have a stored cross site scripting vulnerability. Successful exploitation could lead to privilege escalation.
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Analysis
by VulDB Data Team • 10/26/2019
Adobe Experience Manager represents a comprehensive content management platform widely deployed across enterprise environments for digital experience management. The vulnerability identified as CVE-2019-8080 manifests as a stored cross site scripting flaw within AEM versions 6.3 and 6.4, specifically affecting the platform's user interface components. This vulnerability stems from inadequate input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before rendering it within web pages. The stored nature of this XSS vulnerability means that malicious input submitted by an attacker is permanently saved within the application's database and subsequently executed whenever the compromised content is viewed by other users, including administrators. This creates a particularly dangerous attack vector where an attacker can inject malicious scripts that execute in the context of privileged user sessions, potentially enabling unauthorized access to sensitive system resources and data.
The technical exploitation of this vulnerability occurs when an attacker submits malicious script code through input fields or content management interfaces that are then stored in the AEM repository. When authenticated users with elevated privileges view the affected content, the stored script executes in their browser context, potentially allowing attackers to steal session cookies, perform actions on behalf of users, or escalate privileges within the system. The vulnerability aligns with CWE-79 which categorizes cross site scripting flaws as weaknesses in input validation and output encoding. From an operational perspective, this vulnerability presents significant risk to organizations relying on AEM for content management, as successful exploitation could result in complete system compromise, data exfiltration, and unauthorized modification of critical digital assets. The attack surface expands when considering that AEM administrators often possess extensive privileges including access to user management, content publishing, and system configuration capabilities.
The impact of this vulnerability extends beyond simple script execution to encompass potential privilege escalation scenarios that could allow attackers to assume administrative roles within the AEM environment. This escalation capability stems from the fact that stored XSS attacks can target administrative interfaces and user sessions, potentially enabling attackers to manipulate user permissions, access restricted content, or modify system configurations. Organizations utilizing AEM for digital marketing, customer experience management, and enterprise content delivery face heightened risk as these platforms often contain sensitive business information, customer data, and critical digital assets. The vulnerability's exploitation requires minimal technical expertise and can be automated through various attack frameworks, making it particularly attractive to threat actors seeking to compromise enterprise environments. From a security posture perspective, this vulnerability demonstrates the critical importance of proper input validation and output encoding practices, particularly within content management systems that handle user-generated content.
Organizations should implement immediate mitigations including applying the latest security patches provided by Adobe, which address the input validation and output encoding deficiencies that enable this vulnerability. Network segmentation and web application firewalls can provide additional layers of protection by monitoring and filtering malicious requests before they reach the vulnerable AEM instances. Regular security assessments should include testing for stored XSS vulnerabilities in all web applications, particularly those handling user input. The implementation of content security policies and proper input sanitization routines can significantly reduce the risk of exploitation. Additionally, organizations should consider implementing role-based access controls and regular privilege reviews to minimize the potential impact of successful attacks. The vulnerability serves as a reminder of the critical need for comprehensive security testing throughout the software development lifecycle, particularly in content management platforms where user-generated content processing creates inherent security risks. This case underscores the importance of maintaining up-to-date security patches and implementing defense-in-depth strategies to protect against persistent threats targeting enterprise content management systems.