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CVE-2024-0204: Critical Authentication Bypass in Fortra GoAnywhere MFT

On January 22, 2024, Fortra issued a security advisory regarding a critical authentication bypass, -2024-0204. This affects the GoAnywhere MFT secure managed file transfer product, which is vulnerable to unauthorized access by a remote attacker, allowing them to create an admin user via the administration portal. The affected versions of GoAnywhere MFT include Fortra GoAnywhere MFT 6.x from 6.0.1 to 7.x before 7.4.1. The root cause of -2024-0204 is “Forced Browsing,” a weakness that occurs when a application does not adequately enforce authorization on restricted URLs, scripts, or files. Fortra has addressed this in the release of GoAnywhere MFT on December 7, 2023, but failed to issue an advisory until January 2024. Although Fortra indicated that the was not exploited in the wild at the time of disclosure, Rapid7 advises GoAnywhere MFT customers to take emergency action. From the initial advisory, it is unclear if -2024-0204 has been exploited in the wild. Still, it is expected to become a target of attack quickly, mainly since the fix has been available for over a month. To mitigate the , GoAnywhere MFT customers who have not updated to a fixed version (7.4.1 or higher) should do so on an emergency basis without waiting for a regular patch cycle to occur. It is also recommended that administrative portals are not exposed to the public internet. For non-container deployments, the can be eliminated by deleting the InitialAccountSetup.xhtml file in the installation directory and restarting the services. For container-deployed instances, replace the file with an empty file and restart. Fortra has also offered two manual mitigation pathways for those unable to update to a fixed version.

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