CVE-2017-16685 in Business Warehouse Universal Data Integration
Summary
by MITRE
Cross-Site scripting (XSS) in SAP Business Warehouse Universal Data Integration, from 7.10 to 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, due to insufficient encoding of user controlled inputs.
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Analysis
by VulDB Data Team • 12/14/2019
SAP Business Warehouse Universal Data Integration represents a critical component within the SAP ecosystem that facilitates data integration and transformation processes across various business applications. This vulnerability affects multiple versions of the software including 7.10 through 7.50, creating a widespread impact across enterprise deployments. The cross-site scripting flaw arises from inadequate input validation and output encoding mechanisms that fail to properly sanitize user-controlled data before it is processed and rendered within web interfaces. This vulnerability specifically targets the universal data integration module where users can input data through various interfaces including web forms, API endpoints, and configuration parameters.
The technical flaw manifests when user-supplied input containing malicious script code is not adequately encoded or filtered before being incorporated into dynamically generated web content. This insufficient encoding creates an environment where attackers can inject malicious javascript code that executes in the context of other users' browsers. The vulnerability exists primarily in the data integration interfaces where user inputs are directly used to construct web pages or HTML content without proper sanitization measures. According to CWE standards, this represents a classic cross-site scripting vulnerability classified under CWE-79, which specifically addresses improper neutralization of input during web page generation. The flaw allows attackers to execute arbitrary javascript code in victim browsers, potentially leading to session hijacking, data theft, or redirection to malicious sites.
The operational impact of this vulnerability extends beyond simple script execution as it enables attackers to compromise user sessions and potentially gain unauthorized access to sensitive business data. Organizations utilizing affected SAP versions face significant risk of credential theft, data exfiltration, and unauthorized modifications to business processes. The vulnerability can be exploited through various attack vectors including email links, web forms, or API calls that accept user input. Attackers may craft malicious payloads that appear legitimate to users, making detection more difficult. From an ATT&CK framework perspective, this vulnerability maps to technique T1566 (Phishing) and T1059.007 (Scripting), as it enables attackers to deliver malicious scripts through compromised web interfaces. The attack chain typically involves initial reconnaissance to identify vulnerable systems, crafting malicious payloads, and executing the XSS attack through legitimate user interactions with the affected interfaces.
Mitigation strategies should include immediate implementation of input validation and output encoding controls to prevent malicious code injection. Organizations must ensure that all user-supplied inputs are properly sanitized before being processed or displayed in web interfaces. SAP recommends applying the relevant security patches and updates as soon as they become available, which typically address the encoding deficiencies in the affected modules. Network segmentation and web application firewalls can provide additional layers of protection by filtering suspicious traffic patterns. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other SAP components or custom-developed applications. Access controls and least privilege principles should be enforced to limit the potential impact of successful exploitation, while monitoring systems should be implemented to detect anomalous user behavior or unauthorized access attempts. The vulnerability highlights the critical importance of proper input validation and output encoding practices in enterprise web applications, particularly in complex business integration platforms where data flows between multiple systems.