CVE-2019-4204 in Business Automation Workflow
Summary
by MITRE
IBM Business Automation Workflow 18.0.0.0, 18.0.0.1, 18.0.0.2, and 19.0.0.1 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 159125.
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Analysis
by VulDB Data Team • 09/15/2023
IBM Business Automation Workflow versions 18.0.0.0, 18.0.0.1, 18.0.0.2, and 19.0.0.1 contain a cross-site scripting vulnerability that represents a critical security flaw in the web-based user interface. This vulnerability stems from insufficient input validation and output encoding mechanisms within the application's web components, allowing malicious actors to inject arbitrary JavaScript code through user-controllable input fields or parameters. The flaw exists at the application layer where user-supplied data is not properly sanitized before being rendered in the browser context, creating an avenue for attackers to manipulate the intended functionality of the workflow application.
The technical implementation of this vulnerability enables attackers to execute malicious scripts within the context of a victim's browser session, potentially compromising the confidentiality and integrity of sensitive information. When users interact with the vulnerable application, any malicious JavaScript code injected through the XSS vector can access session cookies, form data, and other sensitive information that the authenticated user has access to. This cross-site scripting vulnerability specifically falls under CWE-79 which categorizes improper neutralization of input during web page generation, making it particularly dangerous as it can be exploited to steal user credentials, hijack sessions, or perform unauthorized actions on behalf of authenticated users. The vulnerability is classified as a persistent XSS issue since the malicious code can be stored and executed across multiple user sessions.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable attackers to establish persistent access to business automation workflows that may contain sensitive enterprise data and process information. Attackers can leverage this vulnerability to gain unauthorized access to workflow processes, manipulate business rules, or extract confidential information from the automation environment. The threat is compounded by the fact that the vulnerability exists within a business-critical application that likely handles sensitive workflow data, making it an attractive target for adversaries seeking to compromise enterprise operations. This vulnerability directly aligns with ATT&CK technique T1566 which involves phishing with malicious attachments or links, and T1071.001 which covers application layer protocol usage for command and control communications.
Organizations utilizing IBM Business Automation Workflow versions affected by CVE-2019-4204 should implement immediate mitigations including input validation and output encoding controls, proper content security policy implementation, and regular security updates. The recommended approach involves implementing strict input sanitization mechanisms that filter out or escape potentially malicious characters before processing user input, combined with robust output encoding that prevents script execution in web contexts. Additionally, organizations should deploy web application firewalls to detect and block suspicious input patterns, implement strict session management controls, and ensure all users are running the latest patched versions of the software. The vulnerability demonstrates the importance of maintaining up-to-date security practices and implementing defense-in-depth strategies to protect critical business automation infrastructure from exploitation.