CVE-2004-2547 in Surgemail
Summary
by MITRE
NetWin (1) SurgeMail before 2.0c and (2) WebMail allow remote attackers to obtain sensitive information via HTTP requests that (a) specify the / URI, (b) specify the /scripts/ URI, or (c) specify a non-existent file, which reveal the path in an error message.
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Analysis
by VulDB Data Team • 04/12/2025
This vulnerability exists in NetWin SurgeMail and WebMail software versions prior to 2.0c, representing a classic information disclosure flaw that can be exploited by remote attackers to gain unauthorized knowledge about the system's internal structure. The vulnerability manifests when attackers submit specific HTTP requests to the web server interface, particularly targeting the root URI, scripts directory URI, or non-existent file paths, which causes the application to return error messages containing sensitive directory paths. This type of information exposure directly violates security principles by providing attackers with valuable reconnaissance data that can be used for subsequent exploitation attempts.
The technical implementation of this vulnerability stems from insufficient input validation and error handling within the web server component of the mail software. When the application encounters a request for a non-existent resource or specific directory paths, it fails to sanitize error messages properly before returning them to the client. This results in the exposure of the server's file system structure, including absolute paths and directory locations that are typically considered sensitive information. From a cybersecurity perspective, this vulnerability aligns with CWE-209, which describes "Information Exposure Through an Error Message," and represents a fundamental flaw in secure error handling practices that should be addressed through proper input sanitization and error message generation protocols.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with critical reconnaissance data that can significantly aid in planning more sophisticated attacks against the system. The revealed paths can help attackers understand the application's directory structure, potentially exposing configuration files, source code locations, or other sensitive system components. This information disclosure can be particularly damaging when combined with other vulnerabilities or attack vectors, as it reduces the attack surface required for successful exploitation. The vulnerability also violates the principle of least privilege by unnecessarily exposing system internals to unauthorized users, which can be categorized under ATT&CK technique T1083 for discovering system information through directory listing and path exposure.
Mitigation strategies for this vulnerability should focus on implementing proper error handling mechanisms that prevent sensitive path information from being exposed to end users. System administrators should immediately upgrade to SurgeMail version 2.0c or later, which contains the necessary patches to address this issue. Additionally, organizations should implement comprehensive input validation for all HTTP requests and ensure that error messages are generic and do not contain system-specific information. Network-level protections such as web application firewalls can also help detect and block malicious requests targeting these specific URI patterns. Regular security audits should be conducted to identify similar information disclosure vulnerabilities across the entire application stack, and proper logging mechanisms should be implemented to monitor for exploitation attempts against known vulnerable patterns. The vulnerability demonstrates the critical importance of secure coding practices and proper error handling in web applications, as even seemingly minor implementation flaws can provide attackers with significant advantages in their reconnaissance and exploitation activities.