CVE-2011-0486 in Cognos 8 Business Intelligence
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in cognos.cgi in IBM Cognos 8 Business Intelligence (BI) 8.4.1 before FP1 allows remote attackers to inject arbitrary web script or HTML via the pathinfo parameter.
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Analysis
by VulDB Data Team • 01/08/2018
The vulnerability identified as CVE-2011-0486 represents a critical cross-site scripting flaw within IBM Cognos 8 Business Intelligence version 8.4.1 prior to fix pack 1. This vulnerability specifically affects the cognos.cgi component which serves as a core web interface for business intelligence reporting and analytics functionality. The flaw resides in how the application processes the pathinfo parameter, which is typically used to determine the requested resource or report within the Cognos environment. When this parameter is improperly validated or sanitized, it creates an opening for malicious actors to inject arbitrary web scripts or HTML content directly into the application's response. The vulnerability is classified as a persistent XSS issue under CWE-79, which specifically addresses cross-site scripting weaknesses in web applications where user input is not properly escaped or validated before being rendered to end users.
The technical exploitation of this vulnerability occurs when remote attackers craft malicious URLs containing specially formatted pathinfo parameters that contain embedded script tags or HTML content. When the vulnerable Cognos application processes these parameters and includes them in the HTTP response without proper sanitization, any user who accesses the affected page will execute the injected code within their browser context. This creates a dangerous attack surface where attackers can steal session cookies, redirect users to malicious sites, deface reports, or perform actions on behalf of authenticated users. The attack vector is particularly concerning because it can be delivered through simple web requests without requiring any special privileges or complex exploitation techniques, making it accessible to a wide range of threat actors.
The operational impact of this vulnerability extends beyond simple data theft or defacement. Organizations using IBM Cognos 8 BI 8.4.1 without the FP1 patch face significant risks to their business intelligence infrastructure, as attackers could potentially gain unauthorized access to sensitive reports, financial data, or operational metrics. The vulnerability undermines the trust model of the application, as legitimate users may unknowingly execute malicious code when accessing reports or dashboards. Additionally, the presence of such a vulnerability may trigger compliance violations for organizations operating in regulated industries where data protection and integrity are mandatory. The attack could be amplified through social engineering campaigns where users are tricked into clicking malicious links that exploit this vulnerability, potentially leading to broader security incidents within the enterprise network.
Organizations should immediately apply IBM's recommended fix pack 1 to address this vulnerability, as it contains the necessary code modifications to properly sanitize the pathinfo parameter before processing user input. Security teams should also implement network-based mitigations such as web application firewalls that can detect and block suspicious pathinfo parameter patterns, though this approach is less reliable than patching the root cause. The vulnerability aligns with ATT&CK technique T1566 which covers spearphishing with a link, as attackers can easily craft malicious URLs that exploit this vulnerability. Additional defensive measures include implementing content security policies that restrict script execution, conducting regular security assessments of web applications, and establishing proper input validation procedures that align with industry standards such as those outlined in the OWASP Top Ten project. Organizations should also consider implementing user education programs to help identify potential phishing attempts that might leverage this vulnerability.