CVE-2012-4858 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 does not properly validate Java serialized input, which allows remote attackers to execute arbitrary commands via unspecified vectors.
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Analysis
by VulDB Data Team • 02/04/2018
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 vulnerability in their Java serialization handling mechanism that enables remote code execution. This vulnerability stems from inadequate input validation during the deserialization process, creating a pathway for malicious actors to inject and execute arbitrary code on affected systems. The flaw exists within the application's handling of serialized Java objects, which are typically used for data transfer and object persistence. When the system receives serialized input without proper validation, it processes the data without sufficient security checks, allowing attackers to craft malicious serialized objects that can trigger unintended operations upon deserialization.
The technical nature of this vulnerability aligns with CWE-502, which describes "Deserialization of Untrusted Data" as a critical weakness in software applications. This weakness enables attackers to manipulate the deserialization process through crafted input that can execute arbitrary commands on the target system. The vulnerability operates at the application layer and can be exploited remotely without requiring authentication, making it particularly dangerous in enterprise environments where business intelligence platforms often serve as central data processing hubs. Attackers can leverage this vulnerability to gain complete control over the affected system, potentially leading to data exfiltration, privilege escalation, or further network infiltration.
The operational impact of CVE-2012-4858 extends beyond simple remote code execution, as it represents a severe compromise of system integrity and confidentiality. Organizations using affected IBM Cognos BI versions face significant risk of unauthorized access to sensitive business data, financial information, and operational metrics that the platform typically manages. The vulnerability's exploitation can lead to complete system compromise, allowing attackers to establish persistent backdoors, deploy additional malware, or use the compromised system as a launch point for attacks against other network segments. Security professionals should note that this vulnerability can be exploited through various attack vectors, including web-based interfaces, API endpoints, or any communication channel that accepts serialized Java objects.
Mitigation strategies for this vulnerability require immediate patch application from IBM, as the vendor has released fixes for affected versions. Organizations should prioritize updating to the latest cumulative fixes for their specific IBM Cognos BI version, ensuring that all security patches are properly applied and tested in production environments. Network segmentation and access controls should be implemented to limit exposure of the affected systems, particularly by restricting external access to business intelligence platforms. Additionally, security monitoring should be enhanced to detect unusual deserialization patterns or unauthorized access attempts. The vulnerability's classification under the MITRE ATT&CK framework places it in the execution category, specifically targeting the use of remote services and application execution capabilities, making it essential for organizations to implement comprehensive defensive measures including network intrusion detection systems and application whitelisting policies to prevent exploitation.