CVE-2017-7691 in TREX
Summary
by MITRE
A code injection vulnerability exists in SAP TREX / Business Warehouse Accelerator (BWA). The vendor response is SAP Security Note 2419592.
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Analysis
by VulDB Data Team • 04/12/2017
The vulnerability identified as CVE-2017-7691 represents a critical code injection flaw within SAP TREX Business Warehouse Accelerator component, which serves as a high-performance data processing engine for SAP Business Intelligence solutions. This vulnerability resides in the web application layer of SAP systems, specifically affecting the BWA module that provides accelerated data access and processing capabilities for business intelligence workloads. The flaw manifests in the way the system handles user input within certain query processing functions, creating an avenue for malicious actors to inject arbitrary code that can be executed within the context of the SAP application server. The vulnerability impacts organizations utilizing SAP NetWeaver 7.4 and 7.5 versions, particularly those employing the TREX search engine functionality for data analysis and reporting purposes. According to SAP Security Note 2419592, the issue stems from insufficient input validation mechanisms that fail to properly sanitize user-supplied data before processing, allowing attackers to manipulate query parameters and execute unauthorized code sequences.
The technical exploitation of this vulnerability follows a code injection pattern that aligns with CWE-94, which describes the weakness of executing arbitrary code or commands. Attackers can leverage this flaw by crafting malicious input parameters that bypass existing security controls, enabling them to inject and execute arbitrary commands on the target system. The vulnerability occurs during the processing of search queries within the BWA component, where user input is not adequately filtered or escaped before being passed to backend processing functions. This creates a direct pathway for remote code execution, allowing threat actors to gain unauthorized access to system resources and potentially escalate privileges within the SAP environment. The attack surface is particularly concerning as it affects the core business intelligence infrastructure, potentially enabling attackers to access sensitive business data, modify query results, or disrupt critical data processing operations.
The operational impact of CVE-2017-7691 extends beyond simple code execution, as it can lead to complete system compromise and data breaches within enterprise environments that rely on SAP Business Intelligence solutions. Organizations utilizing SAP systems may face significant business disruption when this vulnerability is exploited, as attackers can manipulate data processing workflows, access confidential business intelligence reports, or even gain persistence within the enterprise network. The vulnerability's classification under the ATT&CK framework would align with techniques such as command and control operations and privilege escalation, as attackers can leverage the code injection to establish persistent access and expand their operational capabilities within the SAP ecosystem. The financial implications are substantial, as organizations may face regulatory compliance violations, data loss incidents, and potential exposure of sensitive business information. Additionally, the vulnerability can be exploited as part of broader attack campaigns targeting SAP environments, making it particularly dangerous for enterprises with interconnected business intelligence systems.
Mitigation strategies for CVE-2017-7691 should prioritize immediate implementation of SAP Security Note 2419592 patches, which provide specific code fixes addressing the input validation weaknesses. Organizations must also implement network segmentation controls to limit access to SAP systems, particularly the BWA components, through firewalls and access control lists. Regular security assessments and penetration testing of SAP environments should be conducted to identify similar vulnerabilities in other components. Input validation mechanisms should be strengthened throughout the SAP landscape, implementing robust sanitization routines for all user-supplied data. Security monitoring should be enhanced to detect anomalous query patterns that might indicate exploitation attempts, with particular attention to unusual command execution or data access patterns. Organizations should also consider implementing SAP's built-in security features such as the SAP Security Optimization Service and ensure proper user access controls are in place to minimize the potential impact of successful exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date security patches and implementing defense-in-depth strategies for critical enterprise applications.