CVE-2019-19015 in WebTitan
Summary
by MITRE
An issue was discovered in TitanHQ WebTitan before 5.18. The proxy service (which is typically exposed to all users) allows connections to the internal PostgreSQL database of the appliance. By connecting to the database through the proxy (without password authentication), an attacker is able to fully control the appliance database. Through this, several different paths exist to gain further access, or execute code.
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Analysis
by VulDB Data Team • 03/05/2024
This vulnerability in TitanHQ WebTitan affects versions prior to 5.18 and represents a critical security flaw in the proxy service implementation. The issue stems from improper network segmentation and access controls within the appliance architecture, allowing external connections to internal database services that should remain isolated. The proxy service, designed to be accessible to all users, inadvertently exposes the internal PostgreSQL database through a configuration that permits connections without proper authentication mechanisms. This fundamental architectural weakness creates a direct pathway for unauthorized access to the appliance's core database infrastructure.
The technical exploitation of this vulnerability occurs through a simple connection attempt to the PostgreSQL database via the exposed proxy service. Without requiring password authentication, attackers can establish database connections and leverage the full administrative capabilities of the PostgreSQL instance. This unauthenticated access provides complete control over the database content, including user credentials, configuration settings, and potentially sensitive data stored within the appliance. The vulnerability directly maps to CWE-284 Access Control Issues, specifically addressing inadequate access control mechanisms that allow unauthorized users to access protected resources. The flaw also aligns with ATT&CK technique T1078 Valid Accounts, as it enables attackers to gain persistent access through database-level privileges without requiring additional credential compromise.
The operational impact of this vulnerability extends far beyond simple database access, creating multiple attack vectors for further compromise of the affected appliance. Once database control is achieved, attackers can manipulate user accounts, modify security policies, and potentially escalate privileges to system-level access. The database access enables attackers to extract sensitive information including user credentials, system configurations, and potentially other stored data that may contain additional attack vectors or system information. This vulnerability fundamentally undermines the security boundaries of the appliance, transforming what should be an isolated internal database into an accessible attack surface for any external party. The implications include potential data breaches, unauthorized system modifications, and complete compromise of the appliance's security posture.
Mitigation strategies should focus on implementing proper network segmentation and access controls to prevent external access to internal database services. Organizations should immediately update to TitanHQ WebTitan version 5.18 or later, which addresses this specific vulnerability through enhanced access controls and proper authentication requirements for database connections. Network-level protections should include firewall rules that restrict direct database access to only authorized internal systems and implement proper authentication mechanisms for all database connections. Security configurations must ensure that proxy services do not expose internal database ports or services to external networks. Additionally, implementing monitoring and logging for database connection attempts can help detect unauthorized access patterns and provide early warning of potential exploitation attempts. The remediation process should also include reviewing and validating all network access controls to ensure that similar vulnerabilities do not exist in other components of the security infrastructure.