CVE-2007-6643 in Joomla
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the com_poll component in Joomla! before 1.5 RC4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 07/30/2021
The CVE-2007-6643 vulnerability represents a critical cross-site scripting flaw discovered in Joomla websites, making it a significant concern for web administrators who rely on this popular content management system.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the com_poll component. Attackers can exploit this weakness by injecting malicious scripts or HTML code through unspecified vectors that are not properly sanitized before being rendered on web pages. The vulnerability does not require authentication or special privileges to exploit, making it particularly dangerous as it can be leveraged by any remote attacker. The XSS payload can be executed in the context of a victim's browser session, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform a wide range of malicious activities within the compromised web environment. When exploited successfully, the vulnerability allows attackers to steal cookies, session tokens, and potentially sensitive information from authenticated users. The attack can be particularly devastating in scenarios where administrators or logged-in users access vulnerable pages, as the malicious scripts can execute with elevated privileges. This vulnerability also aligns with ATT&CK technique T1531 for "Run-time Process Injection" and T1059.007 for "Command and Scripting Interpreter: JavaScript" when considering the execution context and payload delivery mechanisms.
Mitigation strategies for this vulnerability require immediate patching of affected Joomla! installations to version 1.5 RC4 or later, which includes proper input validation and output encoding fixes. System administrators should also implement additional security measures such as Content Security Policy (CSP) headers to limit script execution contexts and prevent unauthorized code injection. Regular security audits and input validation testing should be conducted to identify similar vulnerabilities in other components. The vulnerability demonstrates the importance of proper security practices in web development, including the principle of least privilege and defense in depth approaches. Organizations should also consider implementing web application firewalls and regular security monitoring to detect and prevent exploitation attempts. This vulnerability serves as a critical reminder of the necessity for continuous security updates and the importance of maintaining current software versions to protect against known exploits.