CVE-2022-33155 in ameos_tarteaucitron Extension
Summary
by MITRE • 07/13/2022
The ameos_tarteaucitron (aka AMEOS - TarteAuCitron GDPR cookie banner and tracking management / French RGPD compatible) extension before 1.2.23 for TYPO3 allows XSS.
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Analysis
by VulDB Data Team • 07/23/2022
The CVE-2022-33155 vulnerability affects the ameos_tarteaucitron TYPO3 extension, a GDPR-compliant cookie banner and tracking management solution designed to help websites comply with French data protection regulations. This extension serves as a critical tool for managing user consent and tracking cookies, making it an essential component for organizations operating in regions with strict privacy requirements. The vulnerability exists in versions prior to 1.2.23, indicating that the extension's developers identified and addressed this security flaw in their subsequent releases.
The technical flaw manifests as a cross-site scripting vulnerability that allows attackers to inject malicious scripts into the extension's functionality. This occurs due to insufficient input validation and output encoding within the extension's codebase, particularly when handling user-supplied data or configuration parameters. The vulnerability likely stems from improper sanitization of data passed through HTTP parameters or form inputs, enabling attackers to execute arbitrary JavaScript code in the context of a victim's browser session. Such vulnerabilities typically arise from CWE-79: Cross-site Scripting flaws where applications fail to properly encode output or validate input data before rendering it in web pages.
The operational impact of this vulnerability is significant for organizations relying on the ameos_tarteaucitron extension for their privacy compliance efforts. Attackers could exploit this XSS vulnerability to hijack user sessions, steal sensitive information, or redirect users to malicious websites. Since the extension manages cookie consent and tracking mechanisms, successful exploitation could compromise the entire privacy management system, potentially allowing attackers to bypass consent mechanisms or manipulate tracking configurations. The vulnerability also poses risks to the integrity of the TYPO3 website itself, as attackers could use the XSS to perform actions on behalf of authenticated users with administrative privileges. This aligns with ATT&CK technique T1531: Account Access Removal, where attackers can manipulate system configurations to gain unauthorized access or disrupt services.
Organizations using affected versions of the ameos_tarteaucitron extension should immediately upgrade to version 1.2.23 or later to remediate the vulnerability. The patch likely includes proper input validation mechanisms and output encoding to prevent malicious script injection. System administrators should also implement additional security measures such as web application firewalls to monitor for suspicious traffic patterns and conduct regular security assessments of their TYPO3 installations. The vulnerability demonstrates the importance of maintaining up-to-date third-party extensions in content management systems, as these components often serve as attack vectors for sophisticated cyber threats targeting web applications. Security teams should prioritize patch management processes and maintain inventories of all installed extensions to quickly identify and remediate similar vulnerabilities across their digital infrastructure.