CVE-2011-5147 in FreeWebshop
Summary
by MITRE
Static code injection vulnerability in ajax_save_name.php in the Ajax File Manager module in the tinymce plugin in FreeWebshop 2.2.9 R2 and earlier allows remote attackers to inject arbitrary PHP code into data.php via the selected document, as demonstrated by a call to ajax_file_cut.php and then to ajax_save_name.php.
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Analysis
by VulDB Data Team • 12/15/2024
The vulnerability identified as CVE-2011-5147 represents a critical static code injection flaw within the Ajax File Manager module of the tinymce plugin in FreeWebshop versions 2.2.9 R2 and earlier. This vulnerability resides in the ajax_save_name.php component which processes file renaming operations through the Ajax File Manager interface. The flaw allows remote attackers to inject arbitrary PHP code into the data.php file by manipulating the selected document parameter during file operations. The attack chain begins with a call to ajax_file_cut.php followed by the exploitation of ajax_save_name.php to execute malicious code within the application's context.
The technical implementation of this vulnerability stems from insufficient input validation and sanitization within the file management operations. When users interact with the Ajax File Manager to cut or rename files, the application fails to properly validate the selected document parameter before incorporating it into the data.php file. This lack of proper sanitization creates a direct pathway for attackers to inject malicious PHP code that gets executed within the web server context. The vulnerability is classified as a static code injection because the malicious code is directly written into the target file rather than being executed through dynamic code evaluation.
The operational impact of this vulnerability is severe as it provides attackers with persistent code execution capabilities on the affected web server. Once successfully exploited, attackers can execute arbitrary PHP code with the privileges of the web server, potentially leading to complete system compromise. The vulnerability affects the core file management functionality of FreeWebshop, which means that any user with access to the Ajax File Manager interface can exploit this flaw. This creates a significant risk for web applications that rely on the tinymce plugin for content management, as the attack can be performed remotely without requiring authentication or specific user privileges beyond access to the vulnerable interface.
Mitigation strategies for CVE-2011-5147 should focus on immediate patching of the FreeWebshop application to version 2.2.9 R3 or later where the vulnerability has been addressed. Organizations should implement proper input validation and sanitization mechanisms to prevent unauthorized code injection attempts. The CWE (Common Weakness Enumeration) classification for this vulnerability aligns with CWE-94, which describes "Improper Control of Generation of Code ('Code Injection')" and specifically addresses the issue of static code injection in file management systems. Additionally, security practitioners should consider implementing web application firewalls and input filtering mechanisms to detect and prevent malicious parameter injection attempts. The ATT&CK framework categorizes this vulnerability under T1059.007 for "Command and Scripting Interpreter: Python" and T1566 for "Phishing" as attackers may use this vulnerability to establish persistent access through injected PHP code. Organizations should also conduct thorough security assessments of all web applications to identify similar vulnerabilities in file management components and implement proper access controls to limit exposure to unauthorized file operations.