CVE-2007-4726 in Weboddity
Summary
by MITRE
Directory traversal vulnerability in Web Oddity 0.09b allows remote attackers to read arbitrary files via a .. (dot dot) in the URI.
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Analysis
by VulDB Data Team • 10/05/2024
The vulnerability identified as CVE-2007-4726 represents a classic directory traversal flaw affecting Web Oddity version 0.09b, a web application framework that was prevalent in the late 2000s era of web development. This type of vulnerability falls under the CWE-22 category, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The flaw exists in how the application processes URI requests containing directory traversal sequences, allowing malicious actors to access files outside the intended web root directory. The vulnerability is particularly concerning because it operates at the core of web application security by enabling unauthorized file access through seemingly benign URI parameters that contain double dot sequences.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the Web Oddity framework's URI processing mechanism. When a remote attacker crafts a URI containing .. (dot dot) sequences, the application fails to properly validate or sanitize these path components before processing them. This allows the attacker to navigate up the directory structure and access files that should remain protected within the web server's restricted directories. The vulnerability specifically affects the application's handling of file paths, where it does not adequately restrict or normalize path components that could lead to unauthorized directory traversal. The flaw essentially permits the attacker to bypass normal file access controls and retrieve sensitive information from arbitrary locations on the filesystem, potentially including configuration files, source code, or other confidential data.
From an operational perspective, this vulnerability poses significant risks to organizations deploying Web Oddity 0.09b applications, as it can lead to complete system compromise and data breaches. Attackers can exploit this weakness to access sensitive files such as database connection strings, application configuration files, or even system files that contain critical information about the server environment. The impact extends beyond simple information disclosure, as successful exploitation could lead to further attacks including privilege escalation, remote code execution, or complete system takeover. The vulnerability operates without requiring authentication, making it particularly dangerous as it can be exploited by anyone with access to the affected web application. Security professionals should note that this vulnerability aligns with several ATT&CK techniques including T1083 (File and Directory Discovery) and T1566 (Phishing) as attackers may use the disclosed information to craft more sophisticated attacks.
Mitigation strategies for CVE-2007-4726 require immediate action to address the core path traversal vulnerability within the Web Oddity framework. Organizations should prioritize upgrading to a patched version of Web Oddity or migrating to more modern web application frameworks that properly implement input validation and path normalization. The fundamental fix involves implementing proper input sanitization that strips or rejects directory traversal sequences from URI parameters before they are processed. Security measures should include implementing strict path validation that ensures all file access requests remain within the intended directory boundaries, often achieved through techniques such as canonicalizing paths and comparing them against a whitelist of allowed directories. Additionally, organizations should deploy web application firewalls that can detect and block suspicious URI patterns containing traversal sequences, while also implementing proper access controls and least privilege principles to minimize the impact of any successful exploitation attempts. The vulnerability serves as a reminder of the critical importance of input validation in web applications and the necessity of following secure coding practices that prevent path traversal attacks at the application level.