Arbitrary file download in CrushFTP

1) External Control of File Name or Path

EUVDB-ID: #VU88869

Risk: High

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C]

CVE-ID: CVE-2024-4040

CWE-ID: CWE-73 - External Control of File Name or Path

Exploit availability: Yes

Description

The vulnerability allows a remote user to delete arbitrary files.

The vulnerability exists due to application allows to access files outside of the virtual file system. A remote authenticated user can read arbitrary system files.

Note, the vulnerability is being exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CrushFTP: before 11.1.0

External links

http://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update
http://old.reddit.com/r/crowdstrike/comments/1c88788/situational_awareness_20240419_crushftp_virtual/
http://crushftp.com/version11_build.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.