CVE-2010-3426 in Com Jphone
Summary
by MITRE
Directory traversal vulnerability in jphone.php in the JPhone (com_jphone) component 1.0 Alpha 3 for Joomla! allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the controller parameter to index.php.
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Analysis
by VulDB Data Team • 08/04/2025
The vulnerability identified as CVE-2010-3426 represents a critical directory traversal flaw within the JPhone component version 1.0 Alpha 3 for Joomla! platforms. This issue stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied data before processing. The vulnerability specifically affects the jphone.php script which handles controller parameters through the index.php entry point, creating an exploitable pathway for malicious actors to manipulate file inclusion operations.
The technical exploitation of this vulnerability occurs through the manipulation of the controller parameter using directory traversal sequences such as .. (dot dot) notation. When a remote attacker crafts a malicious request containing these traversal sequences, the vulnerable component fails to validate or sanitize the input properly, allowing the application to interpret and process these sequences as legitimate file paths. This flaw enables attackers to navigate outside the intended directory structure and access arbitrary local files on the server filesystem, potentially leading to complete system compromise.
From an operational impact perspective, this vulnerability poses significant risks to Joomla! websites utilizing the affected JPhone component. Attackers can leverage this flaw to execute arbitrary code on the target system, potentially gaining unauthorized access to sensitive data, modifying website content, or establishing persistent backdoors. The vulnerability's remote nature means that exploitation can occur without requiring any prior authentication or local access to the system, making it particularly dangerous for publicly accessible web applications.
The vulnerability aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal. This classification reflects the core issue where the application fails to properly restrict file access to predetermined directories. Additionally, the attack vector maps to techniques described in the MITRE ATT&CK framework under T1059.007 for Command and Scripting Interpreter, as successful exploitation would likely involve executing malicious commands through the compromised file inclusion mechanism. Organizations should prioritize immediate remediation by updating to patched versions of the JPhone component, implementing proper input validation controls, and conducting thorough security assessments of their Joomla! installations to identify similar vulnerabilities in other components.
The exploitation of this vulnerability demonstrates the critical importance of input validation in web application security. Without proper sanitization of user inputs, applications become susceptible to various injection attacks that can escalate to full system compromise. Security practitioners should implement defense-in-depth strategies including web application firewalls, regular security audits, and comprehensive patch management processes to prevent similar vulnerabilities from being exploited in production environments.