CVE-2003-1235 in WebWeaver
Summary
by MITRE
BRW WebWeaver 1.03 allows remote attackers to obtain sensitive server environment information via a URL request for testcgi.exe, which lists the values of environment variables and the current working directory.
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Analysis
by VulDB Data Team • 07/16/2025
The vulnerability identified as CVE-2003-1235 affects BRW WebWeaver version 1.03, a web server application that exposes sensitive server environment information through improper access control mechanisms. This flaw represents a significant security weakness that directly impacts the confidentiality of system information and can serve as a critical reconnaissance vector for attackers seeking to understand the target environment. The vulnerability manifests when remote attackers submit specific URL requests targeting testcgi.exe, which then reveals critical environment variables and the current working directory of the server.
The technical implementation of this vulnerability stems from inadequate input validation and access control within the web server's request handling mechanism. When the testcgi.exe component receives a request, it fails to properly authenticate or authorize the incoming connection, allowing any remote user to access internal server environment details. This behavior directly violates security principles of least privilege and information hiding, as the application exposes system internals that should remain protected from external observation. The vulnerability operates at the application layer and can be categorized under CWE-200, which specifically addresses the exposure of sensitive information to an unauthorized actor.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with crucial intelligence for subsequent exploitation attempts. The exposed environment variables may reveal database connection strings, file paths, server configurations, and other sensitive parameters that could facilitate more sophisticated attacks. The current working directory information helps attackers understand the file system structure and potentially identify other accessible directories or files that might contain additional sensitive data. This vulnerability aligns with ATT&CK technique T1083, which covers the discovery of system information through directory listing and environment variable enumeration, making it particularly dangerous in environments where such information could be leveraged for privilege escalation or lateral movement.
Organizations affected by this vulnerability should implement immediate mitigations including restricting access to testcgi.exe and other test components, configuring proper authentication mechanisms, and removing unnecessary test files from production environments. Network-level controls such as firewall rules can be implemented to block access to specific endpoints that expose sensitive information. Additionally, regular security assessments should be conducted to identify and remediate similar vulnerabilities in other web applications. The vulnerability highlights the importance of proper application security testing during development and deployment phases, particularly focusing on access control validation and information disclosure prevention. System administrators should also establish monitoring procedures to detect unusual access patterns to sensitive server components, as this vulnerability could be exploited as part of broader reconnaissance activities.