GHSA-f35p-hcwf-9f9f TYPO3 Unrestricted File Upload vulnerability

• Packagist typo3/cms-core: >= 4.0.0, < 4.0.9 → fixed in 4.0.9 • Packagist typo3/cms-core: >= 4.1.0, < 4.1.7 → fixed in 4.1.7 • Packagist typo3/cms-core: >= 4.2.0, < 4.2.1 → fixed in 4.2.1

TYPO3 4.0.x before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.2.1, uses an insufficiently restrictive default fileDenyPattern for Apache, which allows remote attackers to bypass security restrictions and upload configuration files such as .htaccess, or conduct file upload attacks using multiple extensions.