CVE-2008-1125 in Podcast Generator
Summary
by MITRE
Multiple directory traversal vulnerabilities in Podcast Generator 1.0 BETA 2 and earlier allow remote attackers to read arbitrary files via a .. (dot dot) in the (1) theme_path parameter to core/themes.php and the (2) filename parameter to download.php.
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Analysis
by VulDB Data Team • 10/19/2024
The vulnerability identified as CVE-2008-1125 represents a critical directory traversal flaw affecting Podcast Generator version 1.0 BETA 2 and earlier implementations. This security weakness resides in the application's handling of user-supplied input parameters within two distinct script files, creating pathways for unauthorized file access that could expose sensitive system information. The vulnerability operates through the manipulation of path traversal sequences using the .. (dot dot) notation, which allows attackers to navigate beyond the intended directory structure and access files that should remain restricted.
The technical exploitation occurs in two primary locations within the application's codebase. The first vulnerability exists in the core/themes.php script where the theme_path parameter fails to properly validate or sanitize user input containing directory traversal sequences. The second vulnerability is found in the download.php script where the filename parameter lacks adequate input filtering mechanisms. Both instances demonstrate poor input validation practices that directly violate secure coding principles and create opportunities for attackers to access arbitrary files on the server. This type of vulnerability is classified under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with the capability to access potentially sensitive files including configuration files, database credentials, application source code, and other system resources that could facilitate further exploitation. An attacker could leverage this vulnerability to obtain administrative access, escalate privileges, or extract confidential data that could compromise the entire podcast publishing platform. The remote nature of the attack means that exploitation can occur without requiring physical access to the system or prior authentication, making it particularly dangerous for publicly accessible web applications. According to ATT&CK framework, this vulnerability maps to T1083 (File and Directory Discovery) and T1566 (Phishing with Malicious Attachment) as attackers could use the discovered files to craft more sophisticated attacks.
Mitigation strategies for CVE-2008-1125 should focus on implementing robust input validation and sanitization mechanisms throughout the application's codebase. The most effective remediation involves implementing proper parameter validation that rejects or removes directory traversal sequences from user input before processing. Developers should employ absolute path validation techniques that ensure all file operations occur within predefined safe directories and implement proper access controls that limit file system access to only necessary resources. Additionally, the application should utilize secure coding practices that include input normalization, output encoding, and proper error handling to prevent attackers from exploiting the vulnerability. Organizations should also consider implementing web application firewalls and intrusion detection systems to monitor for suspicious directory traversal attempts. The vulnerability demonstrates the critical importance of input validation as a fundamental security control, particularly when dealing with file system operations and user-supplied data in web applications.