CVE-2020-4564 in Sterling B2B Integrator Standard Edition
Summary
by MITRE • 10/20/2020
IBM Sterling B2B Integrator Standard Edition 5.2.0.0 through 6.0.3.1 and IBM Sterling File Gateway 2.2.0.0 through 6.0.3.1 are 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: 183933.
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Analysis
by VulDB Data Team • 11/21/2020
The vulnerability identified as CVE-2020-4564 affects IBM Sterling B2B Integrator Standard Edition and IBM Sterling File Gateway products across specific version ranges, presenting a critical cross-site scripting vulnerability that undermines web application security. This flaw exists within the web user interfaces of these enterprise integration platforms, which are designed to facilitate business-to-business transactions and file transfers. The vulnerability stems from insufficient input validation and output encoding mechanisms within the web components, allowing malicious actors to inject malicious JavaScript code through user-controllable input fields or parameters. The affected systems process user input without proper sanitization, creating an environment where attackers can execute arbitrary code within the context of authenticated sessions.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input that gets rendered in the web interface without proper HTML escaping or JavaScript sanitization. When legitimate users interact with the vulnerable application, their browsers execute the injected JavaScript code, which can perform actions such as stealing session cookies, capturing user credentials, or redirecting users to malicious sites. This cross-site scripting vulnerability operates at the application layer and can be classified under CWE-79 as "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')". The attack vector typically involves sending malicious payloads through web forms, URL parameters, or API endpoints that are not properly validated before being displayed to users. The vulnerability is particularly dangerous because it can be exploited in the context of a trusted session, meaning that attackers can leverage existing user authentication to perform actions that would otherwise require explicit authorization.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable complete session hijacking and privilege escalation within the integrated business environments. Attackers can use the stolen credentials to access sensitive business data, manipulate transaction flows, or even gain administrative control over the integration platforms. The vulnerability affects organizations that rely on these platforms for critical business processes, potentially leading to data breaches, financial losses, and compliance violations. The attack surface is particularly concerning given that these platforms typically handle sensitive enterprise data including financial transactions, supply chain information, and confidential business communications. Organizations using these products may face regulatory scrutiny if the vulnerability results in unauthorized access to protected data, as the flaw enables attackers to bypass traditional security controls through legitimate user sessions.
Mitigation strategies for this vulnerability involve immediate patching of affected systems, implementing robust input validation mechanisms, and deploying web application firewalls to detect and block malicious payloads. Organizations should ensure that all versions of IBM Sterling B2B Integrator Standard Edition 5.2.0.0 through 6.0.3.1 and IBM Sterling File Gateway 2.2.0.0 through 6.0.3.1 are updated to versions that contain the necessary security fixes. The recommended approach includes implementing proper output encoding for all user-controllable data displayed in web interfaces, utilizing Content Security Policy headers to restrict script execution, and conducting regular security assessments of web applications. Additionally, organizations should consider implementing security monitoring solutions that can detect anomalous behavior patterns indicative of XSS attacks, as well as establishing incident response procedures that address potential credential theft scenarios. The vulnerability aligns with ATT&CK technique T1059.007 for "Command and Scripting Interpreter: JavaScript" and T1531 for "Account Access Removal', demonstrating how XSS can serve as a foundation for broader attack chains within enterprise environments. Regular security training for developers and administrators on secure coding practices, including proper input validation and output encoding, remains crucial for preventing similar vulnerabilities in future deployments.