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Critical CrushFTP zero-day exploited in attacks in the wild | #hacking | #cybersecurity | #infosec | #comptia | #pentest | #hacker


Critical CrushFTP zero-day exploited in attacks in the wild

Pierluigi Paganini
April 20, 2024

Threat actors exploited a critical zero-day vulnerability in the CrushFTP enterprise in targeted attacks, Crowdstrike experts warn.

CrushFTP is a file transfer server software that enables secure and efficient file transfer capabilities. It supports various features such as FTP, SFTP, FTPS, HTTP, HTTPS, WebDAV, and WebDAV SSL protocols, allowing users to transfer files securely over different networks. CrushFTP also provides support for automation, scripting, user management, and extensive customization options to meet the diverse needs of businesses and organizations.

CrushFTP has notified users of a virtual file system escape vulnerability impacting their FTP software, which could potentially enable users to download system files.

“CrushFTP v11 versions below 11.1 have a vulnerability where users can escape their VFS and download system files. This has been patched in v11.1.0. Customers using a DMZ in front of their main CrushFTP instance are protected with its protocol translation system it utilizes.” reads the advisory.

Simon Garrelou from the Airbus CERT discovered the vulnerability.

Crowdstrike researchers discovered that threat actors exploited the critical zero-day vulnerability in targeted attacks in the wild.

“On April 19, 2024, CrushFTP advised of a virtual file system escape present in their FTP software that could allows users to download system files. Falcon OverWatch and Falcon Intelligence have observed this exploit being used in the wild in a targeted fashion.” reads a post published by Crowdstrike on Reddit.

The vulnerability has yet to receive CVE.

Pierluigi Paganini

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

(SecurityAffairs – hacking, zero-day)



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