#VU88869 External Control of File Name or Path in CrushFTP - CVE-2024-4040

Vulnerability identifier: #VU88869

Vulnerability risk: High

CVSSv4.0: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2024-4040

CWE-ID: CWE-73

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
CrushFTP
Server applications / File servers (FTP/HTTP)

Vendor: CrushFTP

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

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

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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.