CVE-2008-6877 in Zen Cart
Summary
by MITRE
** DISPUTED ** Directory traversal vulnerability in admin/includes/initsystem.php in Zen Cart 1.3.8 and 1.3.8a, when .htaccess is not supported, allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the loader_file parameter. NOTE: the vendor disputes this issue, stating "at worst, the use of this vulnerability will reveal some local file paths."
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Analysis
by VulDB Data Team • 11/01/2024
The vulnerability described in CVE-2008-6877 represents a directory traversal flaw within the Zen Cart e-commerce platform version 1.3.8 and 1.3.8a. This security weakness specifically affects systems where .htaccess file restrictions are not properly implemented or supported, creating an exploitable condition that could potentially allow unauthorized remote code execution. The vulnerability manifests through the loader_file parameter in the admin/includes/initsystem.php file, where improper input validation enables attackers to manipulate file paths using directory traversal sequences.
The technical nature of this flaw aligns with CWE-22, which categorizes directory traversal vulnerabilities as weaknesses that occur when application code allows user input to influence file system access without proper validation. In this specific case, the vulnerability exploits the absence of proper input sanitization when processing the loader_file parameter, allowing attackers to append .. (dot dot) sequences to navigate outside the intended directory structure. When .htaccess restrictions are not functioning, the application fails to properly validate or sanitize the file path, creating an opportunity for attackers to access arbitrary local files.
The operational impact of this vulnerability, while disputed by the vendor, could potentially allow attackers to execute arbitrary code on the affected system. The vendor's statement that "at worst, the use of this vulnerability will reveal some local file paths" suggests a more limited impact, but in practice such directory traversal vulnerabilities often serve as stepping stones for more severe attacks. Attackers could potentially leverage this vulnerability to access sensitive configuration files, database credentials, or other system files that might contain exploitable information. The vulnerability's severity is further compounded by the fact that it affects the administrative interface of the e-commerce platform, potentially providing attackers with elevated privileges and access to customer data.
Security professionals should consider this vulnerability in the context of the ATT&CK framework, particularly under the techniques related to privilege escalation and credential access. The vulnerability could be classified as a path traversal attack that falls under the broader category of code injection vulnerabilities. Organizations using affected Zen Cart versions should implement immediate mitigations including proper input validation, file access restriction mechanisms, and ensuring that .htaccess files are properly configured to prevent unauthorized access to sensitive directories. The vendor's disputed status of the vulnerability does not negate the potential security risk, and system administrators should treat this as a potential threat requiring careful monitoring and remediation.