Remote File Read Vulnerability in VFS Sandbox

CVE-2024-4040
10CRITICAL

Key Information

Vendor
Crushftp
Status
Crushftp
Vendor
CVE Published:
22 April 2024

Badges

😄 Trended👾 Exploit Exists🔴 Public PoC🟣 EPSS 96%📰 News Worthy

Summary

CVE-2024-4040 is a critical vulnerability in CrushFTP, allowing unauthenticated remote attackers to escape the VFS Sandbox, read files from the filesystem, bypass authentication, and perform remote code execution. Over 1,400 CrushFTP servers are exposed and vulnerable to this exploit, which has been actively targeted in attacks by unknown threat actors. Concerns have been raised about the severity of the vulnerability, with over 5,200 CrushFTP servers being exposed to the public internet and susceptible to exploitation. The vendor recommends immediate updates to mitigate this vulnerability, as failure to do so could result in unauthorized access, data theft, and full system compromise. The severity of this exploit has prompted warnings and directives from security organizations to secure vulnerable servers and take preventive measures.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2024-4040 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected Version(s)

CrushFTP <= 10.0

CrushFTP < 10.7.1

CrushFTP < 11.1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

News Articles

EPSS Score

96% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability started trending.

  • Risk change from: 7.7 to: 9.8 - (CRITICAL)

  • First article discovered by Tenable

  • 👾

    Exploit exists.

  • Vulnerability Reserved.

  • Vulnerability published.

Collectors

NVD DatabaseMitre DatabaseCISA Database5 Proof of Concept(s)10 News Article(s)

Credit

Simon Garrelou, of Airbus CERT
.