CVE-2015-7431 in Sterling B2B Integrator
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Queue Watcher in IBM Sterling B2B Integrator 5.2 allows remote attackers to inject arbitrary web script or HTML via a crafted URL.
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Analysis
by VulDB Data Team • 05/26/2018
The vulnerability identified as CVE-2015-7431 represents a critical cross-site scripting flaw within IBM Sterling B2B Integrator version 5.2, specifically affecting the Queue Watcher component. This issue exposes organizations to significant security risks by allowing remote attackers to execute malicious web scripts or HTML code through manipulated URL inputs. The vulnerability resides in the web application's handling of user-supplied input within the Queue Watcher interface, which fails to properly sanitize or validate URL parameters before rendering them in the browser context. Such a flaw fundamentally undermines the application's security posture and creates potential entry points for attackers seeking to compromise user sessions or manipulate application behavior.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing embedded script code and delivers it to unsuspecting users within the IBM Sterling B2B Integrator environment. When a victim clicks on the crafted URL, the application processes the input without adequate sanitization, causing the malicious script to execute within the victim's browser context. This type of attack falls under CWE-79 which specifically addresses Cross-site Scripting vulnerabilities, and aligns with ATT&CK technique T1566.001 for Initial Access through Spearphishing Attachment. The flaw demonstrates poor input validation practices and inadequate output encoding mechanisms that are essential for preventing XSS attacks in web applications. The vulnerability affects the authentication and authorization boundaries of the application, potentially enabling attackers to hijack user sessions or escalate privileges within the system.
The operational impact of CVE-2015-7431 extends beyond simple script execution, as it can enable attackers to perform session hijacking, steal sensitive information, manipulate data within the application, or redirect users to malicious websites. Organizations using IBM Sterling B2B Integrator 5.2 may experience unauthorized access to business-critical data flows, disruption of B2B integration processes, and potential compromise of the entire integration infrastructure. The vulnerability particularly affects users who have access to the Queue Watcher functionality, making it a significant concern for businesses relying on this integration platform for their supply chain and business partner communications. Attackers could leverage this vulnerability to gain insights into ongoing integration processes, potentially exposing sensitive business data or disrupting critical business operations.
Mitigation strategies for CVE-2015-7431 should focus on immediate patching of the IBM Sterling B2B Integrator 5.2 system to the latest available security updates from IBM. Organizations should implement proper input validation and output encoding mechanisms within the application code to prevent malicious script injection. Network-level protections such as web application firewalls and security monitoring tools can help detect and block suspicious URL patterns. Additionally, security awareness training for administrators and users can reduce the risk of social engineering attacks that might exploit this vulnerability. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within the broader integration environment. The remediation process should also include reviewing and strengthening the application's security configuration, implementing proper access controls, and establishing monitoring procedures to detect anomalous behavior that might indicate exploitation attempts. Organizations should also consider implementing additional security controls such as content security policies and secure coding practices to prevent similar vulnerabilities from emerging in future development cycles.