CVE-2006-4129 in Webring Component
Summary
by MITRE
PHP remote file inclusion vulnerability in admin.webring.docs.php in the Webring Component (com_webring) 1.0 and earlier for Joomla! allows remote attackers to execute arbitrary PHP code via a URL in the component_dir parameter.
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Analysis
by VulDB Data Team • 07/14/2024
The CVE-2006-4129 vulnerability represents a critical remote file inclusion flaw within the Joomla! Webring Component version 1.0 and earlier, specifically affecting the admin.webring.docs.php file. This vulnerability falls under the category of insecure direct object references and remote code execution, making it particularly dangerous for web application security. The flaw stems from improper input validation and sanitization within the component_dir parameter, which allows attackers to inject malicious URLs that are then processed by the application without adequate security checks.
The technical implementation of this vulnerability occurs when the application accepts user-supplied input through the component_dir parameter and directly incorporates it into file inclusion operations. This creates an environment where an attacker can manipulate the application's behavior by providing a URL that points to malicious PHP code hosted on a remote server. The vulnerability is classified as a CWE-94 weakness, specifically an "Improper Control of Generation of Code ('Code Injection')" which enables arbitrary code execution. When exploited, this flaw allows remote attackers to execute arbitrary PHP code on the target server, potentially leading to complete system compromise.
The operational impact of CVE-2006-4129 extends beyond simple code execution, as it provides attackers with persistent access to vulnerable Joomla installations running vulnerable versions of the Webring component. The attack vector aligns with ATT&CK technique T1190 "Exploit Public-Facing Application" and T1059.007 "Command and Scripting Interpreter: PHP" which demonstrates how attackers can leverage web application vulnerabilities to achieve their objectives.
Mitigation strategies for this vulnerability require immediate patching of the affected Joomla! Webring Component to version 1.1 or later, where the input validation issues have been addressed. System administrators should implement proper input sanitization techniques, including parameter validation, whitelisting of acceptable values, and the use of secure coding practices to prevent similar issues. The vulnerability highlights the importance of following secure coding guidelines such as those outlined in the OWASP Top Ten and the CWE guidelines for preventing code injection vulnerabilities. Additionally, network-level protections such as web application firewalls and intrusion detection systems can provide additional layers of defense, though they cannot replace proper code-level fixes. Organizations should conduct comprehensive security assessments to identify other potential remote file inclusion vulnerabilities in their web applications and ensure that all third-party components are kept up to date with security patches.