CVE-2012-0696 in Cognos TM1
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the Executive Viewer (EV) in IBM Cognos TM1 before 9.5 FP1 allow remote attackers to inject arbitrary web script or HTML via unspecified requests to (1) aspnet_client or (2) evserver/createcontrol.js.
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Analysis
by VulDB Data Team • 01/28/2018
The vulnerability identified as CVE-2012-0696 represents a critical cross-site scripting weakness in IBM Cognos TM1's Executive Viewer component prior to version 9.5 FP1. This flaw exposes organizations to significant security risks by allowing remote attackers to execute malicious web scripts within the context of authenticated user sessions. The vulnerability manifests through unspecified request vectors that target two specific paths within the application's infrastructure, namely the aspnet_client directory and the evserver/createcontrol.js endpoint. These locations serve as entry points for attackers to inject malicious code that can persistently affect user interactions with the TM1 application.
The technical exploitation of this vulnerability leverages the fundamental weakness in input validation and output encoding mechanisms within the Executive Viewer component. Attackers can craft malicious requests that bypass existing security controls, enabling them to inject HTML and JavaScript code into the application's response streams. When legitimate users access pages that render the malicious content, the injected scripts execute in their browser context, potentially leading to session hijacking, credential theft, or unauthorized data manipulation. The vulnerability's impact is amplified by the fact that it affects the core reporting and analytics functionality of Cognos TM1, which typically operates with elevated privileges and access to sensitive business data.
From an operational standpoint, this XSS vulnerability creates substantial risk for organizations utilizing IBM Cognos TM1 for business intelligence and performance management. The attack surface extends beyond simple script injection to include potential privilege escalation scenarios where attackers could manipulate the application to access restricted reports or modify data. The vulnerability affects the application's security posture by undermining the trust model between users and the system, as users cannot distinguish between legitimate and malicious content. Organizations with sensitive financial or operational data stored in TM1 systems face particular risk, as attackers could potentially gain access to confidential business intelligence through these persistent XSS vectors.
The mitigation strategies for CVE-2012-0696 should prioritize immediate patch deployment to IBM Cognos TM1 version 9.5 FP1 or later, which contains the necessary security fixes for the identified XSS vulnerabilities. Organizations should also implement comprehensive input validation and output encoding controls at multiple layers of their application architecture, including web application firewalls and security headers. Network segmentation and access controls can help limit the potential impact of successful exploitation attempts. Security teams should conduct thorough penetration testing and vulnerability assessments to identify any potential bypass mechanisms or additional related vulnerabilities. The remediation process must include comprehensive testing to ensure that the patch does not introduce compatibility issues with existing business applications or reporting dashboards. Organizations should also establish monitoring procedures to detect potential exploitation attempts and maintain detailed audit logs of user activities within the TM1 environment.
This vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and demonstrates the critical importance of proper input sanitization and output encoding in preventing malicious code execution. The ATT&CK framework categorizes this vulnerability under the T1059.007 technique for 'Command and Scripting Interpreter: JavaScript,' highlighting the potential for attackers to leverage JavaScript execution capabilities for further compromise. The vulnerability's persistence through the aspnet_client and evserver paths indicates a deep integration issue within the application's architecture, suggesting that comprehensive security reviews of the entire TM1 application stack may be necessary to identify similar weaknesses in other components. Organizations should also consider implementing Content Security Policy headers and regular security training for administrators to recognize and respond to potential exploitation attempts effectively.