CVE-2002-1484 in DB4Web
Summary
by MITRE
DB4Web server, when configured to use verbose debug messages, allows remote attackers to use DB4Web as a proxy and attempt TCP connections to other systems (port scan) via a request for a URL that specifies the target IP address and port, which produces a connection status in the resulting error message.
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Analysis
by VulDB Data Team • 12/25/2024
The vulnerability identified as CVE-2002-1484 resides within the DB4Web server software, a component designed for database connectivity and web interface functionality. This security flaw manifests when the server operates with verbose debug message configurations, creating an unintended pathway for malicious actors to leverage the system as an intermediary for network reconnaissance activities. The vulnerability operates through a specific request format that instructs the DB4Web server to attempt connections to designated target systems, exploiting the server's debug output mechanisms to reveal connection status information.
The technical implementation of this vulnerability stems from the server's handling of malformed URL requests containing target IP addresses and port numbers within the debug message generation process. When a remote attacker crafts a specific URL request that specifies a target system, the DB4Web server attempts to establish a TCP connection to that destination and subsequently incorporates the connection status information into the error message response. This behavior creates a covert port scanning capability where attackers can systematically probe network endpoints by observing the server's responses, effectively using the vulnerable system as a proxy for reconnaissance activities.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to perform network mapping and port scanning operations without direct access to the target network. The vulnerability operates at the application layer and can be exploited through HTTP requests, making it particularly dangerous as it can bypass traditional network security controls that might not monitor application-level traffic patterns. The debug message functionality, intended for development and troubleshooting purposes, becomes a security risk when deployed in production environments without proper configuration controls.
This vulnerability aligns with CWE-119, which addresses improper restriction of operations within a bounded area, as the DB4Web server fails to properly restrict the scope of network operations initiated through its debug interface. Additionally, the issue relates to ATT&CK technique T1046, which covers network service scanning, as the vulnerability enables attackers to perform port scanning activities using the compromised server as a proxy. The configuration management aspect of this vulnerability also connects to ATT&CK technique T1562.001, which addresses disabling or modifying tools, as the vulnerability is specifically triggered by the presence of verbose debug configurations.
Mitigation strategies for CVE-2002-1484 primarily focus on proper configuration management and security hardening practices. Organizations should immediately disable verbose debug modes in production environments and ensure that DB4Web server configurations do not expose internal network connectivity capabilities. Network segmentation and firewall rules should be implemented to restrict access to the DB4Web server and limit its ability to initiate outbound connections to arbitrary destinations. Regular security audits should verify that debug functionality is properly disabled in production deployments, and access controls should be implemented to prevent unauthorized modification of server configurations. Additionally, network monitoring should be enhanced to detect unusual patterns of outbound connection attempts that might indicate exploitation of this vulnerability.