Cross-Site Request Forgery Vulnerability in Filebrowser by Filebrowser
CVE-2021-46398

8.8HIGH

Key Information:

Vendor

Filebrowser

Status
Filebrowser
Vendor
CVE Published:
4 February 2022

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-46398?

A Cross-Site Request Forgery vulnerability in Filebrowser versions prior to 2.18.0 allows attackers to exploit improperly secured requests. By crafting a malicious HTML page and sending it to a victim, an attacker can create a backdoor user with admin privileges. This compromised admin account grants access to the filesystem, permitting the execution of arbitrary commands through the Filebrowser interface, potentially leading to remote code execution.

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.

CVE-2021-46398_Chamilo-LMS-RCE
Created by febinrev

CVE-2021-46398
Created by LalieA

References

https://github.com/filebrowser/filebrowser/commit/74b7cd8...
x_refsource_MISC
https://febin0x4e4a.blogspot.com/2022/01/critical-csrf-in...
x_refsource_MISC
https://febin0x4e4a.wordpress.com/2022/01/19/critical-csr...
x_refsource_MISC

EPSS Score

9% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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