CVE-2016-6933 in Experience Manager Forms
Summary
by MITRE
Adobe Experience Manager Forms versions 6.2 and earlier, LiveCycle 11.0.1, LiveCycle 10.0.4 have an input validation issue in the AACComponent that could be used in cross-site scripting attacks.
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Analysis
by VulDB Data Team • 10/08/2022
Adobe Experience Manager Forms and LiveCycle products contain a critical input validation vulnerability in the AACComponent that enables cross-site scripting attacks. This vulnerability affects versions 6.2 and earlier of Adobe Experience Manager Forms, as well as LiveCycle versions 11.0.1 and 10.0.4, creating a persistent security risk for organizations utilizing these platforms. The flaw resides in the improper validation of user-supplied input data within the AACComponent, which fails to adequately sanitize or escape special characters that could be interpreted as executable code by web browsers. This input validation weakness allows malicious actors to inject malicious scripts into web pages viewed by other users, potentially leading to session hijacking, credential theft, or unauthorized data access. The vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and represents a significant concern for web application security. Attackers can exploit this issue by crafting malicious input payloads that bypass the component's validation mechanisms, enabling them to execute arbitrary JavaScript code within the context of a victim's browser session. The impact extends beyond simple script execution, as successful exploitation could allow attackers to access sensitive user data, manipulate application functionality, or redirect users to malicious websites. Organizations using these affected versions face potential compromise of user sessions and data integrity, as the vulnerability exists in the core component responsible for processing form submissions and user interactions. The attack surface is particularly concerning given that these components are frequently used in enterprise web applications where sensitive data is processed and stored. This vulnerability falls under the ATT&CK technique T1566, specifically targeting credential access through malicious input, and represents a common vector for initial compromise in web application attacks. The security implications are severe as the vulnerability can be exploited without requiring authentication, making it particularly dangerous for publicly accessible applications. Organizations should immediately implement patches provided by Adobe to address this vulnerability, as the risk of exploitation remains high given the widespread use of these platforms. The remediation process involves updating to patched versions of Adobe Experience Manager Forms and LiveCycle, which include proper input sanitization measures that prevent malicious code injection. Additionally, organizations should consider implementing web application firewalls and additional input validation layers as defensive measures while awaiting official patches. The vulnerability demonstrates the critical importance of proper input validation in web applications and highlights the potential consequences of inadequate sanitization of user-provided data in enterprise software platforms. Security teams must prioritize this vulnerability due to its potential for widespread exploitation and the sensitive nature of data typically processed through these components.