CVE-2019-11643 in Policy Framework
Summary
by MITRE
Persistent XSS has been found in the OneShield Policy (Dragon Core) framework before 5.1.10. Remote adversaries can inject malicious JavaScript into textboxes decorated with type string, which is subsequently stored to the applicable data store. This can be exploited remotely by both authenticated and unauthenticated users.
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Analysis
by VulDB Data Team • 09/15/2023
The vulnerability identified as CVE-2019-11643 represents a critical persistent cross-site scripting flaw within the OneShield Policy Dragon Core framework version 5.1.9 and earlier. This vulnerability resides in the framework's handling of string-type input fields, where user-provided content is not properly sanitized or validated before being stored in the underlying database. The flaw allows attackers to inject malicious JavaScript code directly into text input fields that are designated as string types, creating a persistent security risk that affects all users of the system.
The technical exploitation of this vulnerability occurs through the framework's inadequate input validation mechanisms that fail to strip or encode malicious script content before storage. When users enter JavaScript code into string-type textboxes, the framework accepts and stores this content without proper sanitization, subsequently serving the malicious code to other users who view the stored data. This creates a persistent XSS vector that can be triggered whenever the compromised data is rendered in web interfaces, regardless of whether the victim is authenticated or not. The vulnerability affects both authenticated and unauthenticated users because the malicious payloads are stored server-side and executed in the context of the victim's browser when they access pages containing the compromised data.
From an operational perspective, this vulnerability presents significant risks to organizations using the OneShield Policy framework, as it allows attackers to execute arbitrary JavaScript code in the browsers of unsuspecting users. The impact extends beyond simple data theft to include potential session hijacking, credential theft, and the ability to perform actions on behalf of users. Attackers can leverage this vulnerability to create backdoors, redirect users to malicious sites, or steal sensitive information from the application's user base. The persistent nature of the vulnerability means that once exploited, the malicious code remains active until manually removed from the database, providing attackers with sustained access to the system's user base. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications, and maps to ATT&CK technique T1566.001 for social engineering through malicious content injection.
Organizations should implement immediate mitigations including input validation and output encoding for all string-type fields, ensuring that any user-provided content is properly sanitized before storage. The framework should be updated to version 5.1.10 or later where this vulnerability has been patched. Additionally, implementing Content Security Policy headers, using proper input sanitization libraries, and conducting regular security testing of user input fields can help prevent similar vulnerabilities. Security teams should also implement monitoring for suspicious data patterns and establish procedures for regular database content review to detect and remove malicious payloads that may have been injected through this vulnerability.