CVE-2022-23800 in Joomla
Summary
by MITRE • 03/30/2022
An issue was discovered in Joomla! 4.0.0 through 4.1.0. Inadequate content filtering leads to XSS vulnerabilities in various components.
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Analysis
by VulDB Data Team • 04/01/2022
The vulnerability identified as CVE-2022-23800 represents a critical cross-site scripting flaw affecting Joomla components, creating exploitable entry points for malicious actors to inject arbitrary web scripts into web applications. The vulnerability manifests when user-supplied content is inadequately sanitized before being rendered in web pages, allowing attackers to execute malicious scripts in the context of other users' browsers.
The technical flaw resides in the application's failure to properly filter and escape user-controllable data within various components of the Joomla! framework. This inadequate content filtering occurs at multiple layers including form inputs, URL parameters, and content management fields where user-generated content is processed and displayed without sufficient sanitization measures. The vulnerability specifically affects components that handle user submissions, content editing, and administrative interfaces where the application fails to implement proper HTML escaping or content security policies. According to CWE classification, this vulnerability maps to CWE-79 which describes improper neutralization of input during web page generation, making it a classic cross-site scripting vulnerability that enables attackers to manipulate web page content and execute malicious code.
The operational impact of CVE-2022-23800 extends beyond simple script execution as it provides attackers with potential access to user sessions, data theft capabilities, and persistent infection vectors within compromised Joomla for their web presence, particularly those with administrative interfaces that process user input.
Mitigation strategies for CVE-2022-23800 should prioritize immediate patching of affected Joomla! versions to the latest stable releases that contain proper input validation and output encoding fixes. Organizations should also implement additional defensive measures including web application firewalls, content security policies, and regular security audits of user input handling mechanisms. The implementation of proper input sanitization libraries and output encoding functions should be enforced across all components that process user-generated content. According to ATT&CK framework methodology, this vulnerability would be classified under T1203 - Exploitation for Client Execution, and organizations should consider implementing network segmentation and monitoring for suspicious script injection patterns. Regular security training for developers on secure coding practices and input validation techniques remains crucial for preventing similar vulnerabilities in future development cycles.