CVE-2007-6218 in Ossigeno
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Ossigeno CMS 2.2 pre1 allow remote attackers to execute arbitrary PHP code via a URL in the (1) level parameter to (a) install_module.php and (b) uninstall_module.php in upload/xax/admin/modules/, (c) upload/xax/admin/patch/index.php, and (d) install_module.php and (e) uninstall_module.php in upload/xax/ossigeno/admin/; and the (2) ossigeno parameter to (f) ossigeno_modules/ossigeno-catalogo/xax/ossigeno/catalogo/common.php, different vectors than CVE-2007-5234.
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Analysis
by VulDB Data Team • 11/03/2025
The vulnerability described in CVE-2007-6218 represents a critical remote file inclusion flaw affecting Ossigeno CMS version 2.2 pre1, specifically targeting multiple administrative scripts that fail to properly validate user-supplied input parameters. This vulnerability falls under the category of CWE-88, which describes improper neutralization of special elements used in an expression, and more specifically relates to CWE-94, which addresses execution of arbitrary code due to improper input validation. The flaw manifests in several distinct locations within the application's file structure, including install_module.php and uninstall_module.php within the upload/xax/admin/modules/ directory, as well as upload/xax/admin/patch/index.php, and similar vectors in the upload/xax/ossigeno/admin/ directory. Additionally, the vulnerability extends to the ossigeno_modules/ossigeno-catalogo/xax/ossigeno/catalogo/common.php file where the ossigeno parameter becomes exploitable.
The technical exploitation of this vulnerability occurs when an attacker supplies a malicious URL through the vulnerable parameters, specifically the level parameter in the administrative modules and the ossigeno parameter in the catalog module. When these parameters are processed without proper sanitization, the application incorporates external content into its execution flow, effectively allowing attackers to inject and execute arbitrary PHP code on the target server. This type of vulnerability directly enables the ATT&CK technique T1190, which involves using legitimate browser-based APIs to execute malicious code, and T1059, which covers the execution of code through various scripting languages. The attack vector leverages the trust relationship between the web application and the user input, bypassing normal security controls that would typically prevent unauthorized code execution.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with complete control over the affected web server. Successful exploitation allows for arbitrary code execution, which can lead to full system compromise, data theft, and the establishment of persistent backdoors. The vulnerability affects multiple administrative endpoints, amplifying the attack surface and providing attackers with various entry points to compromise the system. The presence of multiple vectors also means that traditional perimeter defenses may not adequately protect against this threat, as attackers can choose the most suitable path based on the current state of the target environment. Additionally, the vulnerability's impact extends beyond immediate code execution to include potential privilege escalation and lateral movement within the network.
Mitigation strategies for this vulnerability require immediate remediation through input validation and output encoding practices that align with the OWASP Top Ten security principles. The most effective approach involves implementing strict parameter validation that rejects any input containing URLs or external references in administrative scripts, particularly those handling module installation and uninstallation processes. Organizations should also implement proper access controls and authentication mechanisms to limit exposure, ensuring that only authorized administrators can access the vulnerable endpoints. The fix should include removing or properly sanitizing user-supplied parameters before they are processed, implementing a whitelist approach for acceptable input values, and ensuring that the application does not accept external URLs for module operations. Additionally, regular security audits and code reviews should be conducted to identify similar vulnerabilities in other parts of the application, as this type of flaw often indicates broader input validation issues that may exist elsewhere in the codebase, making it crucial to adopt comprehensive defensive programming practices throughout the application development lifecycle.