CVE-2008-1495 in PEEL
Summary
by MITRE
Unrestricted file upload vulnerability in administrer/produits.php in PEEL, possibly 3.x and earlier, allows remote authenticated administrators to upload and execute arbitrary PHP files via a modified content type in an ajout action, as demonstrated by (1) image/gif and (2) application/pdf.
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Analysis
by VulDB Data Team • 10/19/2024
The CVE-2008-1495 vulnerability represents a critical unrestricted file upload flaw in PEEL e-commerce software versions 3.x and earlier, specifically within the administrer/produits.php component. This vulnerability affects authenticated administrative users who possess the ability to manage product uploads through the ajout action functionality. The flaw stems from inadequate input validation and sanitization of file upload requests, particularly concerning the content type parameter that is manipulated during the file upload process.
The technical exploitation of this vulnerability occurs when an authenticated administrator performs an ajout action with a modified content type header. The vulnerability specifically demonstrates the ability to upload malicious PHP files by manipulating the content type to appear as legitimate file types such as image/gif or application/pdf. This manipulation bypasses the intended file type validation mechanisms that should restrict uploads to safe media formats. The flaw essentially allows attackers to upload executable code that can be executed on the web server, creating a path for remote code execution and full system compromise.
From an operational impact perspective, this vulnerability transforms a legitimate administrative function into a potential attack vector for privilege escalation and system compromise. An attacker who gains administrative access can upload malicious PHP scripts that may include web shells, backdoors, or other malicious payloads designed to maintain persistent access or exfiltrate data. The vulnerability undermines the principle of least privilege and can lead to complete system takeover, data breaches, and unauthorized access to sensitive customer information stored within the e-commerce platform. The impact extends beyond immediate code execution to include potential lateral movement within network infrastructure and data corruption or theft.
The vulnerability aligns with CWE-434, which specifically addresses the weakness of unrestricted upload of executable code, and can be mapped to ATT&CK technique T1190 for exploitation of vulnerabilities in web applications. Organizations utilizing PEEL software should implement immediate mitigations including input validation for file types, content type checking, and proper file extension filtering. Additionally, restricting upload directories from being executable, implementing proper access controls, and conducting regular security audits of web applications are essential measures. The vulnerability highlights the importance of secure file handling practices and demonstrates the critical need for input validation at multiple layers of application security. Organizations should also consider implementing web application firewalls and regular security assessments to prevent similar vulnerabilities from being exploited in production environments.