CVEs / CVE-2024-4040
CVE-2024-4040: CrushFTP VFS Sandbox Escape Vulnerability
- Known exploited in the CISA KEV catalog since 24 Apr 2024
- critical 10 CVSS 3.1 (NVD)
- EPSS 99.5% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
CrushFTP contains an unspecified sandbox escape vulnerability that allows a remote attacker to escape the CrushFTP virtual file system (VFS).
Description
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| CrushFTP CrushFTP | from 10.0, before 10.7.1 | 10.7.1 |
| CrushFTP CrushFTP | from 11.0, before 11.1.0 | 11.1.0 |
| crushftp crushftp | from 10.0, before 10.7.1 | 10.7.1 |
| crushftp crushftp | from 11.0, before 11.1.0 | 11.1.0 |
Exploitation
| In CISA KEV since | 24 Apr 2024 |
|---|---|
| Due date for US federal agencies | 1 May 2024 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 10 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-1336, CWE-94 |
References
- CVE-2024-4040 on NVD
- CVE-2024-4040 in the CISA KEV catalog
- https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update&version=34 (cited by CISA)
- https://github.com/airbus-cert/CVE-2024-4040 Exploit, Third Party Advisory
- https://www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/ Press/Media Coverage, Third Party Advisory
- https://www.crushftp.com/crush10wiki/Wiki.jsp?page=Update Patch, Vendor Advisory
- https://www.crushftp.com/crush11wiki/Wiki.jsp?page=Update Patch, Vendor Advisory
- 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/ Exploit, Issue Tracking
- https://www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable/ Issue Tracking, Patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4040 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.