CVE-2019-4596 in Sterling B2B Integrator Standard Edition
Summary
by MITRE
IBM Sterling B2B Integrator Standard Edition 5.2.0.0 through 5.2.6.5 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: 167879.
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Analysis
by VulDB Data Team • 05/12/2025
The vulnerability identified as CVE-2019-4596 affects IBM Sterling B2B Integrator Standard Edition versions 5.2.0.0 through 5.2.6.5, representing a critical cross-site scripting weakness that compromises the security integrity of the web-based user interface. This vulnerability resides within the application's input validation mechanisms, specifically failing to properly sanitize user-supplied data before rendering it within the web application's response. The flaw enables malicious actors to inject malicious JavaScript code through carefully crafted input fields or parameters that are subsequently executed within the context of other users' sessions. This particular vulnerability falls under CWE-79 which categorizes cross-site scripting flaws as weaknesses in web applications where untrusted data is improperly incorporated into web pages without proper validation or escaping mechanisms. The attack vector leverages the web interface's failure to implement adequate output encoding or sanitization techniques that would normally prevent malicious script execution in the browser context of legitimate users.
The operational impact of this vulnerability extends beyond simple functional disruption to pose significant risks to session security and data confidentiality. When an attacker successfully exploits this XSS vulnerability, they can execute JavaScript code within the victim's browser session, potentially stealing session cookies, credentials, or other sensitive information that is transmitted within the trusted session context. The threat is particularly severe because the affected application serves as a business-to-business integration platform where users may have elevated privileges and access to sensitive business data. This vulnerability enables attackers to perform session hijacking attacks, steal authentication tokens, or redirect users to malicious sites that can further exploit the compromised session. The IBM X-Force ID 167879 confirms this as a recognized security concern that could allow for privilege escalation and unauthorized access to business-critical integration processes. From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1059.007 which describes the use of JavaScript as a means of executing malicious code within web browsers, making it particularly dangerous in enterprise environments where the application handles sensitive transactional data.
Mitigation strategies for CVE-2019-4596 should focus on immediate patch management and input validation enhancements to prevent further exploitation. Organizations should prioritize applying the official IBM security patches released for this vulnerability, which typically include enhanced input sanitization and output encoding mechanisms that prevent malicious JavaScript from being executed within the web interface. Additionally, implementing proper content security policies through HTTP headers can provide an additional layer of protection by restricting script execution and preventing unauthorized code injection. Network-level defenses such as web application firewalls should be configured to detect and block suspicious input patterns that could indicate XSS attempts. The remediation process should also include comprehensive input validation at multiple layers of the application architecture, ensuring that all user-supplied data is properly escaped or encoded before being rendered in web responses. Organizations should conduct thorough security testing including dynamic application security testing and manual penetration testing to verify that the implemented mitigations effectively prevent XSS exploitation. Regular security awareness training for developers on secure coding practices and proper input validation techniques remains essential to prevent similar vulnerabilities from emerging in future versions of the application.