CVE-2020-4561 in Cognos Analytics
Summary
by MITRE • 06/02/2021
IBM Cognos Analytics 11.0 and 11.1 DQM API allows submitting of all control requests in unauthenticated sessions. This allows a remote attacker who can access a valid CA endpoint to read and write files to the Cognos Analytics system. IBM X-Force ID: 183903.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 06/03/2021
The vulnerability identified as CVE-2020-4561 affects IBM Cognos Analytics versions 11.0 and 11.1, specifically within the Data Quality Manager (DQM) API component. This issue represents a critical authentication bypass flaw that fundamentally undermines the security posture of the affected systems. The vulnerability stems from improper access control mechanisms within the DQM API that fail to adequately validate session authenticity, allowing unauthorized users to submit control requests without proper authentication credentials. The flaw exists at the application layer and directly impacts the system's ability to enforce access controls, creating a pathway for malicious actors to exploit the platform's file system operations. Organizations utilizing these specific versions of IBM Cognos Analytics face significant risk exposure due to this vulnerability, as it enables attackers to perform unauthorized file operations that could lead to data compromise, system disruption, or further lateral movement within the network infrastructure.
The technical implementation of this vulnerability manifests through the DQM API's failure to properly authenticate incoming requests, particularly when processing control commands that should require valid session tokens or authentication credentials. Attackers can leverage this weakness by directly accessing valid CA endpoints and submitting control requests that bypass normal authentication procedures. The vulnerability specifically enables remote code execution capabilities through file read and write operations, allowing malicious actors to manipulate the underlying file system of the Cognos Analytics installation. This authentication bypass operates at the API level and can be exploited without requiring prior access to valid user credentials, making it particularly dangerous as it can be leveraged by attackers who have already gained access to the network or have knowledge of valid endpoint addresses. The flaw essentially creates a backdoor mechanism within the application's control flow that circumvents the normal authentication and authorization checks that should protect system resources and data integrity.
The operational impact of CVE-2020-4561 extends beyond immediate data compromise to encompass potential system-wide disruption and long-term security degradation. Remote attackers who successfully exploit this vulnerability can execute arbitrary file operations, potentially leading to the installation of malicious software, data exfiltration, or the corruption of critical system files. The vulnerability creates opportunities for attackers to escalate privileges within the Cognos Analytics environment and could facilitate further attacks against interconnected systems. Organizations may experience unauthorized access to sensitive business intelligence data, disruption of analytics services, and potential compliance violations due to the exposure of confidential information. The attack surface is particularly concerning for enterprises that rely heavily on Cognos Analytics for business reporting and data analysis, as the compromised system could serve as a foothold for more extensive network infiltration attempts. This vulnerability aligns with CWE-285, which addresses improper authorization issues, and follows patterns consistent with ATT&CK technique T1078 for valid accounts and T1059 for command and scripting interpreter.
Mitigation strategies for CVE-2020-4561 should prioritize immediate patching of affected IBM Cognos Analytics installations to the latest available security fixes. Organizations must ensure that all systems running versions 11.0 and 11.1 are updated with the appropriate security patches provided by IBM to address the authentication bypass vulnerability. Network segmentation and access controls should be implemented to limit exposure of the DQM API endpoints to only trusted networks and authorized personnel. Regular monitoring of system logs for unauthorized access attempts and file system modifications should be established to detect potential exploitation attempts. Additionally, organizations should conduct comprehensive security assessments to identify any other potentially vulnerable components within their IBM Cognos Analytics environments. The implementation of multi-factor authentication mechanisms and enhanced session management protocols can provide additional layers of protection against similar vulnerabilities. Security teams should also consider disabling unnecessary API endpoints and implementing strict firewall rules to restrict access to the DQM API from untrusted sources, thereby reducing the attack surface and limiting the potential impact of such authentication bypass vulnerabilities.