CVE-2008-1124 in Podcast Generator
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Podcast Generator 1.0 BETA 2 and earlier allow remote attackers to execute arbitrary PHP code via a URL in the absoluteurl parameter to (1) components/xmlparser/loadparser.php; (2) admin.php, (3) categories.php, (4) categories_add.php, (5) categories_remove.php, (6) edit.php, (7) editdel.php, (8) ftpfeature.php, (9) login.php, (10) pgRSSnews.php, (11) showcat.php, and (12) upload.php in core/admin/; and (13) archive_cat.php, (14) archive_nocat.php, and (15) recent_list.php in core/.
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Analysis
by VulDB Data Team • 10/18/2024
The vulnerability described in CVE-2008-1124 represents a critical remote file inclusion flaw affecting Podcast Generator version 1.0 BETA 2 and earlier systems. This vulnerability resides within the core application logic where user-supplied input is directly incorporated into file inclusion operations without proper sanitization or validation. The affected parameters are particularly concerning as they target administrative and core functionality files, creating multiple attack vectors that could potentially lead to complete system compromise. The vulnerability specifically impacts the absoluteurl parameter which is processed in numerous PHP files throughout the application's codebase, making it a widespread issue across the entire platform.
The technical nature of this vulnerability aligns with CWE-88, which describes improper neutralization of special elements used in an expression, and CWE-94, which covers improper control of generation of code. These weaknesses create conditions where attacker-controlled input can be interpreted as executable code rather than simple data. The flaw operates by allowing remote attackers to inject malicious URLs into the absoluteurl parameter, which are then processed by PHP's include or require functions. When these functions execute with attacker-controlled input, they can load and execute arbitrary PHP code from remote servers, effectively providing attackers with a backdoor into the system.
The operational impact of this vulnerability is severe and multifaceted, encompassing complete system compromise, data exfiltration, and potential lateral movement within network environments. Attackers could leverage this vulnerability to upload malicious files, establish persistent backdoors, or gain administrative access to podcast management systems. The affected files span both frontend and backend components, including administrative interfaces, category management functions, and core RSS feed generation modules. This widespread impact means that successful exploitation could affect not only the podcast content management but also the underlying server infrastructure, potentially compromising other applications hosted on the same server. The vulnerability also aligns with ATT&CK technique T1190, which describes exploitation of remote services, and T1059, covering the execution of malicious code through command injection.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements. The primary solution involves implementing strict input validation and sanitization for all user-supplied parameters, particularly those used in file inclusion operations. Applications should employ allowlists of acceptable values rather than denylists, and all external URL inputs should be validated against known good patterns. Additionally, the application should be configured to disable remote file inclusion features entirely, using PHP's configuration settings to restrict include operations to local files only. Security measures should include regular input validation, proper error handling to prevent information leakage, and implementation of proper access controls for administrative functions. Organizations should also consider implementing web application firewalls and intrusion detection systems to monitor for exploitation attempts. The vulnerability demonstrates the critical importance of proper input validation and the principle of least privilege in web application security, where user inputs should never be directly trusted or executed without proper sanitization. Regular security audits and code reviews should be conducted to identify similar patterns that could lead to remote code execution vulnerabilities in other applications.