Description
The sanitizeLocalUrl function in TYPO3 6.x before 6.2.15, 7.x before 7.4.0, 4.5.40, and earlier allows remote authenticated users to bypass the XSS filter and conduct cross-site scripting (XSS) attacks via a base64 encoded data URI, as demonstrated by the (1) returnUrl parameter to show_rechis.php and the (2) redirect_url parameter to index.php.
Remediation
References
Related Vulnerabilities
ownCloud Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-3838)
Oracle Database Server CVE-2006-5341 Vulnerability (CVE-2006-5341)
LimeSurvey Incorrect Permission Assignment for Critical Resource Vulnerability (CVE-2019-16187)
Chamilo Improper Privilege Management Vulnerability (CVE-2020-23128)
JBoss Application Server Improper Privilege Management Vulnerability (CVE-2012-2312)