CVE-2024-4040

CrushFTP VFS Sandbox Escape Vulnerability

Severity Score

10.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

Act

*SSVC

Descriptions

A server side template injection vulnerability in CrushFTP in all versions before 10.7.1 and 11.1.0 on all platforms allows unauthenticated remote attackers to read files from the filesystem outside of the VFS Sandbox, bypass authentication to gain administrative access, and perform remote code execution on the server.

VFS Sandbox Escape en CrushFTP en todas las versiones anteriores a 10.7.1 y 11.1.0 en todas las plataformas permite a atacantes remotos con privilegios bajos leer archivos del sistema de archivos fuera de VFS Sandbox.

CrushFTP contains an unspecified sandbox escape vulnerability that allows a remote attacker to escape the CrushFTP virtual file system (VFS).

*Credits: Simon Garrelou, of Airbus CERT

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Act

Exploitation

Active

Automatable

Yes

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2024-04-22 CVE Reserved
2024-04-22 CVE Published
2024-04-24 Exploited in Wild
2024-04-25 First Exploit
2024-05-01 KEV Due Date
2024-08-01 CVE Updated
2024-09-01 EPSS Updated

CWE

CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine

CAPEC

CAPEC-115: Authentication Bypass
CAPEC-253: Remote Code Inclusion

References (18)

URL	Tag	Source
https://www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately	Media Coverage
https://www.rapid7.com/blog/post/2024/04/23/etr-unauthenticated-crushftp-zero-day-enables-complete-server-compromise	Third Party Advisory
https://www.reddit.com/r/crowdstrike/comments/1c88788/situational_awareness_20240419_crushftp_virtual	Media Coverage

URL	Date	SRC
https://github.com/entroychang/CVE-2024-4040	2024-07-09
https://github.com/Mohammaddvd/CVE-2024-4040	2024-04-30
https://github.com/Praison001/CVE-2024-4040-CrushFTP-server	2024-04-29
https://github.com/airbus-cert/CVE-2024-4040	2024-08-01
https://github.com/Stuub/CVE-2024-4040-SSTI-LFI-PoC	2024-07-07
https://github.com/gotr00t0day/CVE-2024-4040	2024-05-04
https://github.com/rbih-boulanouar/CVE-2024-4040	2024-04-25
https://github.com/jakabakos/CVE-2024-4040-CrushFTP-File-Read-vulnerability	2024-05-02
https://github.com/olebris/CVE-2024-4040	2024-06-28
https://github.com/1ncendium/CVE-2024-4040	2024-05-13
https://github.com/Mufti22/CVE-2024-4040	2024-04-25
https://github.com/tucommenceapousser/CVE-2024-4040-Scanner	2024-04-25

URL	Date	SRC
https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update	2024-04-26
https://www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable	2024-04-26

URL	Date	SRC
https://www.crushftp.com/crush10wiki/Wiki.jsp?page=Update	2024-04-26

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Crushftp Search vendor "Crushftp"		Crushftp Search vendor "Crushftp" for product "Crushftp"				>= 10.0.0 < 10.7.1 Search vendor "Crushftp" for product "Crushftp" and version " >= 10.0.0 < 10.7.1"		-		Affected
Crushftp Search vendor "Crushftp"		Crushftp Search vendor "Crushftp" for product "Crushftp"				>= 11.0.0 < 11.1.0 Search vendor "Crushftp" for product "Crushftp" and version " >= 11.0.0 < 11.1.0"		-		Affected