CVE-2003-1540 in WF-Chat
Summary
by MITRE
WF-Chat 1.0 Beta stores sensitive information under the web root with insufficient access control, which allows remote attackers to obtain authentication information via a direct request to (1) !pwds.txt and (2) !nicks.txt.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 12/23/2024
The vulnerability described in CVE-2003-1540 represents a critical misconfiguration issue within the WF-Chat 1.0 Beta web application that exposes sensitive authentication data to unauthorized remote attackers. This flaw stems from improper access control mechanisms that fail to adequately protect sensitive files stored within the web root directory. The affected application stores authentication credentials and user identification information in plain text files named nicks.txt, which are accessible through direct HTTP requests without proper authentication checks. This configuration violates fundamental security principles of least privilege and proper resource isolation, creating an attack surface that allows adversaries to obtain critical system credentials with minimal effort.
The technical exploitation of this vulnerability relies on the web server's default configuration that does not properly restrict access to sensitive files within the document root. When attackers send direct HTTP requests to these specific file paths, the web server serves the contents of nicks.txt without verifying user credentials or access permissions. The
nicks.txt holds username and nickname mappings that can be used for further credential enumeration attacks. This type of vulnerability falls under the CWE-276 category of Incorrect Access Control, specifically addressing insufficient access control mechanisms that allow unauthorized access to sensitive resources. The flaw demonstrates a classic case of insecure direct object reference where application components are directly accessible through predictable file paths.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with the foundation for more sophisticated attacks including credential reuse, account takeover, and privilege escalation within the affected system. Once attackers obtain the authentication information from these files, they can impersonate legitimate users, potentially gaining access to restricted areas of the chat application, modifying user accounts, or even escalating privileges to administrative levels depending on the application's architecture. This vulnerability particularly affects environments where the chat application is deployed in shared hosting environments or where proper security hardening has not been implemented. The attack vector is straightforward and requires no specialized tools beyond basic HTTP request capabilities, making it highly exploitable in automated scanning campaigns.
Mitigation strategies for this vulnerability must address both the immediate exposure and the underlying architectural issues that enabled the flaw. Organizations should immediately implement proper access controls using web server configuration directives such as .htaccess files or server-level access control lists that prevent direct access to sensitive files. The application should be reconfigured to store authentication data in non-web-accessible directories or implement proper authentication checks before serving any sensitive content. Additionally, the application should be updated to use secure password storage mechanisms such as salted hash functions rather than plain text storage. This vulnerability aligns with ATT&CK technique T1566.001 for credential access through unsecured credentials and represents a clear violation of the principle of least privilege that should be enforced at all levels of application architecture. Regular security audits and proper file permission management should be implemented to prevent similar misconfigurations in other web applications within the organization's infrastructure.