CVE-2020-15099

EIP tracks 2 public exploits for CVE-2020-15099. PoCs published by Dread1ess, StillSoul.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2020-15099, an unauthenticated RCE vulnerability in TYPO3 due to unsafe deserialization in the Form Framework frontend controller. The exploit uses the Guzzle/FW1 gadget chain to achieve remote code execution when the encryptionKey is known.

In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.20, and greater than or equal to 10.0.0 and less than 10.4.6, in a case where an attacker manages to generate a valid cryptographic message authentication code (HMAC-SHA1) - either by using a different existing vulnerability or in case the internal encryptionKey was exposed - it is possible to retrieve arbitrary files of a TYPO3 installation. This includes the possibility to fetch typo3conf/LocalConfiguration.php, which again contains the encryptionKey as well as credentials of the database management system being used. In case a database server is directly accessible either via internet or in a shared hosting network, this allows the ability to completely retrieve, manipulate or delete database contents. This includes creating an administration user account - which can be used to trigger remote code execution by injecting custom extensions. This has been patched in versions 9.5.20 and 10.4.6.