CVE-2008-6508 in Openfire
Summary
by MITRE
Directory traversal vulnerability in the AuthCheck filter in the Admin Console in Openfire 3.6.0a and earlier allows remote attackers to bypass authentication and access the admin interface via a .. (dot dot) in a URI that matches the Exclude-Strings list, as demonstrated by a /setup/setup-/.. sequence in a URI.
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Analysis
by VulDB Data Team • 11/10/2024
The vulnerability described in CVE-2008-6508 represents a critical directory traversal flaw within the Openfire administration console authentication mechanism. This issue affects versions 3.6.0a and earlier, where the AuthCheck filter fails to properly validate URI paths that contain directory traversal sequences. The vulnerability specifically manifests when a malicious actor crafts a URI containing the .. (dot dot) sequence that matches the Exclude-Strings list, allowing unauthorized access to administrative functions through carefully constructed path traversal attacks.
The technical implementation of this vulnerability stems from insufficient input validation within the authentication filter's path processing logic. When the system encounters a URI such as /setup/setup-/.., the AuthCheck filter incorrectly handles the directory traversal component, effectively bypassing the intended authentication checks. This flaw operates at the application layer and exploits weaknesses in how the software processes and validates web request paths. The vulnerability is particularly dangerous because it allows remote attackers to access administrative interfaces without proper credentials, potentially leading to complete system compromise.
From an operational impact perspective, this vulnerability exposes Openfire servers to significant security risks including unauthorized administrative access, data breaches, and potential system takeover. Attackers can leverage this flaw to gain access to sensitive configuration data, user information, and system settings that should only be accessible to authorized administrators. The remote nature of this attack means that threat actors do not require physical access to the system and can exploit this vulnerability from anywhere on the internet, making it particularly concerning for organizations running vulnerable Openfire installations.
This vulnerability aligns with CWE-22 Directory Traversal and maps to ATT&CK technique T1210 Exploitation of Remote Services, specifically targeting the authentication bypass aspect of the attack. Organizations should immediately implement mitigations including upgrading to Openfire versions 3.6.1 or later where this vulnerability has been patched, applying proper input validation to all URI paths, and implementing network-level restrictions to limit access to administrative interfaces. Additional security measures such as implementing web application firewalls, monitoring for suspicious URI patterns, and conducting regular security assessments can help detect and prevent exploitation attempts. The vulnerability underscores the importance of proper input validation and authentication mechanisms in web applications, particularly those handling administrative functions.