CVE-2022-36773 in Cognos Analytics
Summary
by MITRE • 09/01/2022
IBM Cognos Analytics 11.1.7, 11.2.0, and 11.2.1 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 233571.
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Analysis
by VulDB Data Team • 10/11/2022
IBM Cognos Analytics versions 11.1.7, 11.2.0, and 11.2.1 contain a critical XML External Entity Injection vulnerability that represents a significant security risk for organizations relying on this business intelligence platform. This vulnerability falls under the CWE-611 category of XML External Entity Processing and aligns with ATT&CK technique T1213.002 for Data from Information Repositories. The flaw exists in the XML processing functionality of the platform, where the application fails to properly validate and sanitize XML input before parsing, creating an attack surface that can be exploited by remote threat actors.
The technical implementation of this vulnerability allows attackers to craft malicious XML payloads that reference external entities during the parsing process. When the system processes such malformed XML data, it can be induced to make unauthorized network requests to external servers or access local files that would normally be restricted. This behavior enables information disclosure attacks where sensitive data from the server filesystem, internal network resources, or database connections can be exfiltrated through the XML parsing mechanism. Additionally, the vulnerability can be leveraged for resource exhaustion attacks that consume memory and processing power, potentially leading to denial of service conditions that impact legitimate users of the analytics platform.
The operational impact of this vulnerability extends beyond simple data exposure, as it affects the core functionality of IBM Cognos Analytics and can compromise the integrity of business intelligence workflows. Organizations utilizing these vulnerable versions face risks including unauthorized access to corporate data, potential lateral movement within network environments, and disruption of critical business reporting processes. The attack surface is particularly concerning given that Cognos Analytics typically processes sensitive business data and may have access to enterprise databases and internal systems. This vulnerability can be exploited through various attack vectors including API endpoints, file upload mechanisms, or any interface that accepts XML formatted data for processing within the platform.
Organizations should implement immediate mitigations including applying the vendor-provided security patches and updates released by IBM to address this XXE vulnerability. Network segmentation and firewall rules should be configured to restrict access to the affected systems, particularly limiting external connectivity to XML processing endpoints. Input validation mechanisms should be strengthened to ensure all XML data is properly sanitized before processing, implementing strict XML schema validation and disabling external entity resolution in XML parsers. Security monitoring should be enhanced to detect unusual network connections or file access patterns that might indicate exploitation attempts. The implementation of web application firewalls and security scanning tools can provide additional layers of protection against XXE attacks targeting this specific vulnerability. Organizations should also conduct comprehensive vulnerability assessments to identify any other systems that might be similarly affected by XML external entity processing flaws and ensure proper configuration management practices are maintained to prevent future occurrences of this class of vulnerability.