CVE-2020-4672 in Business Automation Workflow
Summary
by MITRE • 11/16/2020
IBM Business Automation Workflow 20.0.0.1 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: 186285.
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Analysis
by VulDB Data Team • 12/08/2020
IBM Business Automation Workflow version 20.0.0.1 contains a cross-site scripting vulnerability that represents a critical security flaw in the web-based user interface. This vulnerability falls under the Common Weakness Enumeration category CWE-79 which specifically addresses cross-site scripting flaws in web applications. The weakness occurs when the application fails to properly sanitize user input before rendering it within web pages, allowing malicious actors to inject executable JavaScript code into the application's interface. The vulnerability specifically affects the web user interface components where user-supplied data is directly incorporated into dynamic content without adequate validation or encoding measures.
The operational impact of this vulnerability extends beyond simple script execution as it creates a persistent threat vector that can be exploited within trusted sessions. When authenticated users interact with the affected workflow application, they become potential victims of session hijacking attacks where attackers can steal session cookies and credentials. The vulnerability enables attackers to manipulate the application's intended behavior by injecting malicious scripts that can capture user input, redirect users to malicious sites, or perform actions on behalf of authenticated users. This creates a significant risk for organizations relying on Business Automation Workflow for critical business processes, as the attack surface includes any user interaction with the web interface.
The exploitation of this vulnerability requires minimal prerequisites as it leverages existing authenticated sessions within the application. Attackers can craft malicious payloads that, when executed, can harvest sensitive information from the browser environment including authentication tokens and session identifiers. The IBM X-Force ID 186285 confirms this vulnerability's severity and provides additional context for security professionals. Organizations using this software are at risk of credential theft, unauthorized access to business processes, and potential data breaches. The vulnerability's impact is particularly concerning because it operates within the trusted session boundary, meaning that users who are authenticated to the system can be compromised without requiring additional authentication.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the web application. Organizations must ensure that all user-supplied data is properly sanitized before being rendered in web pages, implementing proper HTML encoding and JavaScript escaping techniques. The recommended approach includes deploying web application firewalls that can detect and block malicious script injection attempts, implementing content security policies to restrict script execution, and ensuring regular patching of the Business Automation Workflow software. Additionally, security awareness training for administrators and users can help identify potential social engineering attempts that might exploit this vulnerability. Organizations should also consider implementing network segmentation and monitoring solutions to detect anomalous behavior that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of secure coding practices and proper input validation in enterprise workflow applications, aligning with ATT&CK technique T1531 which focuses on credential access through web application vulnerabilities.