Known exploited vulnerability
CVE-2024-4040
The short answer
CVE-2024-4040 affects CrushFTP CrushFTP and is rated critical (CVSS 10.0). CISA added it to the Known Exploited Vulnerabilities catalog on 2024-04-24: attackers are using it, so patch it first. The vendor has linked a patch.
What it is
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.
Severity
10.0 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Apr 24, 2024
Federal due date May 1, 2024
EPSS, next 30 days
100%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected products
CrushFTP, crushftp. NVD's record lists the exact affected versions.
References
- github.com/airbus-cert/CVE-2024-4040 ExploitThird Party Advisory
- www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/ Press/Media CoverageThird Party Advisory
- www.crushftp.com/crush10wiki/Wiki.jsp?page=Update PatchVendor Advisory
- www.crushftp.com/crush11wiki/Wiki.jsp?page=Update PatchVendor Advisory
- www.rapid7.com/blog/post/2024/04/23/etr-unauthenticated-crushftp-zero-day-enables-complete-server-compromise/ Third Party Advisory
- www.reddit.com/r/crowdstrike/comments/1c88788/situational_awareness_20240419_crushftp_virtual/ ExploitIssue Tracking
- www.reddit.com/r/cybersecurity/comments/1c850i2/all_versions_of_crush_ftp_are_vulnerable/ Issue TrackingPatch
- github.com/airbus-cert/CVE-2024-4040 ExploitThird Party Advisory
- www.bleepingcomputer.com/news/security/crushftp-warns-users-to-patch-exploited-zero-day-immediately/ Press/Media CoverageThird Party Advisory
- www.crushftp.com/crush10wiki/Wiki.jsp?page=Update PatchVendor Advisory
- www.crushftp.com/crush11wiki/Wiki.jsp?page=Update PatchVendor Advisory
- www.rapid7.com/blog/post/2024/04/23/etr-unauthenticated-crushftp-zero-day-enables-complete-server-compromise/ Third Party Advisory
Questions
Is CVE-2024-4040 being exploited?
Yes. CISA added CVE-2024-4040 to its Known Exploited Vulnerabilities catalog on 2024-04-24, with a federal remediation due date of 2024-05-01.
How do I fix CVE-2024-4040?
CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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