CVE-2020-4166 in Security Guardium Insights
Summary
by MITRE
IBM Security Guardium Insights 2.0.1 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system. IBM X-Force ID: 174402.
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Analysis
by VulDB Data Team • 11/11/2020
IBM Security Guardium Insights version 2.0.1 contains a vulnerability that exposes sensitive system information through detailed error messages returned to web browsers. This flaw represents a classic information disclosure vulnerability where the application fails to properly sanitize error responses, allowing attackers to access internal system details that should remain hidden from external users. The vulnerability falls under the category of insufficient logging and monitoring as defined by CWE-209, where error handling mechanisms inadvertently reveal system internals to unauthorized parties. When the application encounters an error condition, it returns verbose technical details including stack traces, internal paths, and system configurations that provide attackers with valuable reconnaissance data for subsequent exploitation attempts.
The operational impact of this vulnerability extends beyond simple information disclosure, as the leaked information can significantly aid attackers in planning more sophisticated attacks against the system. The detailed error messages may reveal database structures, application architecture, server configurations, and potentially even credential storage patterns that could be leveraged for privilege escalation or lateral movement within the network. This aligns with ATT&CK technique T1212, which focuses on exploitation for credential access through information gathering and reconnaissance activities. The vulnerability particularly affects the web interface components of Guardium Insights, making it accessible to remote attackers without requiring authentication or physical access to the system.
Security professionals should understand that this vulnerability demonstrates poor error handling practices and inadequate input validation within the application's web layer. The flaw indicates that the system lacks proper error message sanitization mechanisms that would prevent sensitive data exposure while still providing useful feedback to legitimate users. Organizations using IBM Security Guardium Insights 2.0.1 should implement immediate mitigations including configuring the application to return generic error messages to users while logging detailed technical information internally for administrative review. The recommended approach involves implementing comprehensive error handling that follows security best practices outlined in OWASP Top Ten and NIST guidelines for secure coding practices.
Mitigation strategies should include configuring the web server to suppress detailed error messages from being displayed to end users, implementing proper input validation to prevent error conditions that trigger sensitive information disclosure, and establishing centralized logging systems that capture detailed error information without exposing it to unauthorized parties. Organizations should also consider implementing web application firewalls that can detect and block attempts to trigger error conditions that might reveal system internals. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities across the application stack, as this flaw represents a common weakness in web applications that often goes unnoticed during initial development phases. The vulnerability underscores the importance of maintaining proper separation between user-facing error messages and internal system diagnostics, a fundamental principle of secure application design that helps prevent attackers from gaining intelligence about system internals through seemingly benign error conditions.