CVE-2005-1685 in episodex guestbook
Summary
by MITRE
episodex guestbook allows remote attackers to bypass authentication and edit scripts via a direct request to admin.asp.
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Analysis
by VulDB Data Team • 06/02/2019
The vulnerability identified as CVE-2005-1685 affects episodex guestbook software and represents a critical authentication bypass flaw that allows remote attackers to gain administrative privileges without proper credentials. This vulnerability specifically targets the admin.asp script within the guestbook application, creating a pathway for unauthorized users to directly access administrative functions and modify system scripts. The flaw stems from inadequate input validation and improper access control mechanisms that fail to verify user authentication status before granting administrative access to sensitive backend functionality.
This authentication bypass vulnerability operates through a direct request manipulation technique where attackers can bypass the standard login procedures by directly accessing the admin.asp endpoint. The technical implementation of this flaw suggests that the application does not properly validate session tokens or user credentials when processing requests to administrative endpoints, allowing any remote user to craft malicious requests that directly invoke administrative functions. The vulnerability aligns with CWE-287 which addresses improper authentication issues in software systems, specifically targeting the failure to properly authenticate users before granting access to privileged functions.
The operational impact of this vulnerability is severe as it provides attackers with complete administrative control over the guestbook application. Once authenticated through this bypass, attackers can modify guestbook entries, alter configuration settings, inject malicious code into scripts, and potentially escalate their privileges further within the compromised system. The remote nature of this attack means that no local access or prior credentials are required, making it particularly dangerous for web applications that are publicly accessible. This vulnerability also enables attackers to persist in the system and maintain long-term access while potentially covering their tracks through script modifications.
Security professionals should implement multiple layers of mitigation strategies to address this vulnerability effectively. The primary recommendation involves patching the application to enforce proper authentication checks before allowing access to administrative functions, ensuring that all requests to admin.asp are properly validated against active user sessions. Network-level controls including firewall rules and web application firewalls should be configured to restrict direct access to administrative endpoints and monitor for suspicious request patterns. Additionally, implementing proper input validation and session management protocols will help prevent similar vulnerabilities from occurring in other parts of the application. The remediation approach should align with ATT&CK technique T1078 which addresses valid accounts and legitimate credentials as a means of maintaining access, ensuring that access controls are properly enforced throughout the system architecture. Organizations should also conduct regular security assessments to identify similar authentication bypass vulnerabilities in other legacy systems and ensure proper application hardening practices are implemented across all web applications.