The mailto (aka com_mailto) component in Joomla! 1.5 before 1.5.7 sends e-mail messages without validating the URL, which allows remote attackers to transmit spam.
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Analysis
by VulDB Data Team • 06/22/2019
The CVE-2008-4103 vulnerability resides within the mailto component of Joomla websites. The flaw manifests when the system fails to properly validate the URL parameters passed to the mailto component, creating an avenue for malicious actors to exploit the email sending mechanism without proper authorization or validation checks.
The technical implementation of this vulnerability stems from inadequate input validation within the Joomla component and its underlying email sending capabilities, making it particularly dangerous as it can be exploited without requiring elevated privileges or authentication.
The operational impact of CVE-2008-4103 extends beyond simple spam transmission to potentially compromise the reputation and security posture of affected Joomla become unwitting participants in spam distribution networks, which can result in legal and regulatory consequences. This vulnerability directly relates to CWE-20, which describes improper input validation, and aligns with ATT&CK technique T1192, which covers Spearphishing Attachments, as the vulnerability can be exploited to deliver malicious content through email channels.
Mitigation strategies for CVE-2008-4103 primarily focus on immediate patch application and enhanced security monitoring. Organizations must upgrade to Joomla environment. The vulnerability highlights the importance of proper input validation and parameter sanitization in web applications, aligning with security best practices outlined in OWASP Top Ten and other industry standards that emphasize the need for robust input validation to prevent injection-based attacks and unauthorized functionality exploitation.