CVE-2019-0024 in ATP
Summary
by MITRE
A persistent cross-site scripting (XSS) vulnerability in the Email Collectors menu of Juniper ATP may allow authenticated user to inject arbitrary script and steal sensitive data and credentials from a web administration session, possibly tricking a follow-on administrative user to perform administrative actions on the device. This issue affects Juniper ATP 5.0 versions prior to 5.0.3.
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Analysis
by VulDB Data Team • 07/01/2023
The vulnerability CVE-2019-0024 represents a critical persistent cross-site scripting flaw discovered in Juniper ATP version 5.0 prior to 5.0.3, specifically within the Email Collectors menu component. This vulnerability arises from inadequate input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before rendering it in web interfaces. The flaw allows authenticated attackers to inject malicious scripts that persist in the application's data storage, making it particularly dangerous as the malicious code remains active across multiple user sessions and interactions with the affected component.
The technical exploitation of this vulnerability occurs through the Email Collectors menu where user input is not adequately sanitized before being stored and subsequently displayed to other users. When an authenticated user accesses the affected interface, the malicious script code executes in the context of the victim's browser session, potentially enabling attackers to steal session cookies, credentials, and other sensitive information. The persistent nature of this XSS vulnerability means that the injected scripts remain stored in the application's database or configuration files, executing each time the affected page is loaded by any user with appropriate privileges.
From an operational impact perspective, this vulnerability creates significant risk for organizations utilizing Juniper ATP as their threat prevention solution. The ability to inject scripts that can steal administrative credentials and session information compromises the integrity of the entire security infrastructure. An attacker who successfully exploits this vulnerability can gain elevated privileges and perform administrative actions on the device, potentially leading to complete system compromise. The attack vector specifically targets authenticated users with administrative privileges, making it particularly dangerous in environments where multiple administrators access the same system. This vulnerability directly maps to CWE-79 which defines cross-site scripting flaws, and aligns with ATT&CK technique T1059.007 for scripting and T1566 for credential harvesting through social engineering.
Organizations should immediately implement mitigations including updating to Juniper ATP version 5.0.3 or later, which contains the necessary patches to address the input validation and output encoding deficiencies. Network administrators should also consider implementing additional security controls such as web application firewalls to detect and block suspicious script injection attempts, and conduct thorough security assessments of all web-based administrative interfaces. Regular monitoring of administrative sessions and implementing strict access controls can help reduce the attack surface and limit potential damage from successful exploitation attempts. The vulnerability demonstrates the critical importance of proper input validation and output encoding in web applications, particularly those handling sensitive administrative functions and security-related data.