CVE-2018-8802 in Clearpath MCP
Summary
by MITRE
SQL injection vulnerability in the management interface in ePortal Manager in Unisys ClearPath MCP OS systems with 17.0 CLEARPATHEPORTAL before 17.0a.31 and 18.0 CLEARPATHEPORTAL before 059.1a.13; and ClearPath OS 2200 systems with 16.0 EPORTAL-2200 before 2.2.81 and 17.0 EPORTAL-2200 before 2.3.82 allows remote attackers to execute arbitrary SQL commands via unspecified parameters.
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Analysis
by VulDB Data Team • 01/16/2020
The vulnerability identified as CVE-2018-8802 represents a critical SQL injection flaw within the management interface of Unisys ClearPath MCP OS systems, specifically affecting ePortal Manager components across multiple system versions. This vulnerability resides in the ClearPath OS environment which operates as a mainframe operating system designed for mission-critical applications in enterprise environments. The affected systems include both ClearPath MCP OS versions 17.0 and 18.0 with their respective ePortal components, as well as ClearPath OS 2200 systems with EPORTAL-2200 components, all prior to their respective security patches. The flaw manifests in the management interface where user input is not properly sanitized before being incorporated into SQL database queries, creating an avenue for malicious exploitation.
The technical implementation of this vulnerability stems from inadequate input validation and parameter sanitization within the web-based management interface of these mainframe systems. Attackers can manipulate unspecified parameters through the management interface to inject malicious SQL commands directly into the underlying database layer. This occurs because the application fails to properly escape or validate user-supplied data before incorporating it into database queries, allowing attackers to manipulate the intended query structure. The vulnerability falls under CWE-89 which specifically addresses SQL injection flaws where untrusted data is executed as SQL commands. The attack vector is remote, meaning that unauthorized individuals can exploit this weakness without requiring physical access to the system, making it particularly dangerous for enterprise environments where these systems typically operate in networked configurations.
The operational impact of this vulnerability extends beyond simple data compromise, as it enables full database command execution capabilities for remote attackers. Successful exploitation could allow malicious actors to retrieve sensitive information from the database, modify or delete critical data, create new database users with elevated privileges, or even escalate their access to the underlying operating system. Given that these systems operate in enterprise environments with critical business applications, the potential for business disruption, data loss, and unauthorized access to sensitive information is substantial. The vulnerability affects systems that typically handle mission-critical data processing, making the implications severe for organizations relying on ClearPath MCP OS for their core operations. Organizations using these systems may face compliance violations if sensitive data is compromised, and the attack surface extends beyond just the database layer to potentially impact the entire system infrastructure.
Mitigation strategies for CVE-2018-8802 should prioritize immediate application of vendor-provided patches, specifically targeting the affected versions mentioned in the advisory including 17.0 CLEARPATHEPORTAL before 17.0a.31, 18.0 CLEARPATHEPORTAL before 059.1a.13, 2200 systems with 16.0 EPORTAL-2200 before 2.2.81, and 17.0 EPORTAL-2200 before 2.3.82. Network segmentation and firewall rules should be implemented to restrict access to the management interface, limiting exposure to only authorized personnel and systems. Additionally, implementing web application firewalls and input validation controls can provide additional layers of protection against similar vulnerabilities. Organizations should also conduct thorough vulnerability assessments to identify any other potential SQL injection vulnerabilities in their broader system landscape, as this type of flaw often indicates broader security gaps in application development practices. The remediation process should include comprehensive testing to ensure that the patches do not introduce compatibility issues with existing applications and that proper access controls remain in place for legitimate system administrators. This vulnerability aligns with ATT&CK technique T1071.004 which covers application layer protocol: Structured Query Language, and represents a classic example of how legacy mainframe systems can contain security vulnerabilities that require careful attention to maintain operational security.