CVE-2012-4840 in Cognos Business Intelligence
Summary
by MITRE
IBM Cognos Business Intelligence (BI) 8.4.1 before IF1, 10.1 before IF2, 10.1.1 before IF2, and 10.2 before IF1 allows remote attackers to conduct XPath injection attacks, and call XPath extension functions, via unspecified vectors.
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Analysis
by VulDB Data Team • 02/07/2018
IBM Cognos Business Intelligence versions 8.4.1 before IF1, 10.1 before IF2, 10.1.1 before IF2, and 10.2 before IF1 contain a critical XPath injection vulnerability that enables remote attackers to manipulate XML query structures and execute unauthorized operations. This vulnerability resides in the application's handling of user-supplied input within XPath expressions, which are used to query and retrieve data from XML documents. The flaw allows attackers to inject malicious XPath expressions that can bypass authentication mechanisms and access sensitive data through the manipulation of XML-based queries. The vulnerability affects multiple versions of IBM Cognos BI, indicating a widespread issue that has persisted across several release cycles. According to CWE-643, this represents an XPath Injection vulnerability where insufficient input validation allows attackers to manipulate XPath expressions, potentially leading to unauthorized data access, information disclosure, and privilege escalation. The attack vector is particularly concerning as it operates over network connections without requiring authentication, making it accessible to any remote attacker. The vulnerability enables exploitation of XPath extension functions, which can provide additional attack surface for malicious code execution and data manipulation. This weakness directly impacts the confidentiality and integrity of business intelligence data, as attackers can potentially extract sensitive information from databases and XML repositories that the system is designed to protect. The vulnerability's classification under ATT&CK technique T1213.002 indicates its potential for data access and extraction through the manipulation of structured query languages and XML processing mechanisms.
The technical exploitation of this vulnerability occurs when user input is directly incorporated into XPath expressions without proper sanitization or validation. Attackers can craft malicious XPath queries that leverage the system's XPath extension functions to perform unauthorized operations such as accessing restricted data, bypassing access controls, or executing unintended XML processing. The vulnerability is particularly dangerous because XPath injection attacks can often be performed without complex exploitation techniques, relying instead on the natural structure of the XML query processing. IBM Cognos BI systems typically process XML-based queries to retrieve business intelligence data from various sources, and the injection flaw allows attackers to manipulate these queries to access data beyond their intended scope. The vulnerability's impact extends beyond simple information disclosure, as the ability to call XPath extension functions provides attackers with additional capabilities for data manipulation and system exploitation. This weakness creates a pathway for attackers to potentially escalate privileges and access administrative functions that should be restricted to authorized users only.
The operational impact of this vulnerability is significant for organizations relying on IBM Cognos Business Intelligence for their data analytics and reporting needs. Companies may experience unauthorized access to sensitive business data, including financial information, customer records, and strategic business intelligence that could be used for competitive advantage or malicious purposes. The vulnerability affects the fundamental security posture of business intelligence systems, which often contain highly sensitive and valuable data that organizations depend on for decision making. Organizations may face regulatory compliance issues if sensitive data is accessed without authorization, particularly in industries with strict data protection requirements such as healthcare, finance, and government sectors. The vulnerability also impacts business continuity as unauthorized access to business intelligence systems can disrupt normal operations and potentially lead to data corruption or manipulation. Organizations may need to implement emergency patches or workarounds while awaiting official security updates, which can create operational challenges and potential system downtime. The long-term implications include the need for enhanced security monitoring and the potential requirement for additional security controls to protect against similar vulnerabilities in other components of the business intelligence infrastructure.
Organizations should implement immediate mitigations including applying the official IBM security patches and fixes for the affected versions of Cognos Business Intelligence. Network segmentation and access controls should be strengthened to limit exposure to the vulnerable systems, particularly for web-based interfaces that may be accessible from external networks. Input validation and sanitization measures should be enhanced to prevent user-supplied data from being directly incorporated into XPath expressions without proper filtering. Security monitoring should be increased to detect potential exploitation attempts through unusual query patterns or access to restricted data elements. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in the broader business intelligence ecosystem. Organizations should also consider implementing web application firewalls to help detect and block malicious XPath injection attempts. The vulnerability highlights the importance of secure coding practices and input validation in XML processing components, emphasizing the need for developers to follow secure development lifecycle practices. Additionally, organizations should review their data access controls and privilege management to ensure that even if exploitation occurs, the impact is limited through proper access control mechanisms. Training for system administrators and developers on secure coding practices and vulnerability management should be enhanced to prevent similar issues in future implementations.