CVE-2023-40657 in Joomdoc Component
Summary
by MITRE • 12/14/2023
A reflected XSS vulnerability was discovered in the Joomdoc component for Joomla.
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Analysis
by VulDB Data Team • 01/10/2024
The reflected cross-site scripting vulnerability in the Joomdoc component for Joomla represents a critical security flaw that allows attackers to inject malicious scripts into web pages viewed by other users. This vulnerability specifically affects the Joomla content management system and its associated Joomdoc extension which provides document management capabilities. The flaw occurs when user input is not properly sanitized before being reflected back to the browser, creating an opening for attackers to execute arbitrary code in the context of the victim's browser session.
The technical implementation of this vulnerability stems from insufficient input validation within the Joomdoc component's parameter handling mechanisms. When users interact with the component through URL parameters or form inputs, the system fails to adequately filter or escape special characters that could be interpreted as executable script code. This allows malicious actors to craft URLs containing script payloads that are then reflected back to unsuspecting users who click on the compromised links. The vulnerability directly aligns with CWE-79 which defines cross-site scripting flaws as weaknesses that occur when an application includes untrusted data in web pages without proper validation or escaping.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable sophisticated attack vectors including session hijacking, credential theft, and redirection to malicious domains. Attackers can leverage this flaw to steal administrative credentials, manipulate document access controls, or deface the Joomla website entirely. The reflected nature of the vulnerability means that attackers do not need persistent access to the system but can exploit the weakness through targeted phishing campaigns or by compromising links shared within the Joomla community. This makes the vulnerability particularly dangerous in environments where users frequently click on external links or where the component is widely used.
Security practitioners should immediately implement multiple layers of defense including input validation, output encoding, and proper parameter sanitization techniques. The recommended mitigation strategy involves updating to the latest version of Joomdoc that includes patched validation routines for all user-supplied parameters. Additionally, administrators should consider implementing web application firewalls with XSS protection rules and establish comprehensive monitoring for suspicious traffic patterns indicating exploitation attempts. Organizations using this component should also review their access controls and implement principle of least privilege configurations to limit potential damage from successful attacks. The vulnerability demonstrates the importance of following secure coding practices as outlined in the OWASP Top Ten and aligns with ATT&CK technique T1566 which covers social engineering through malicious links and attachments.