CVE-2024-0643CWE-434

Unrestricted upload of dangerous file types in C21 Live Encoder and Live Mosaic

Critical · published January 17, 2024

CVSS v3.1
10.0
EPSS
1%
Percentile
51.4
In the wild
Unconfirmed
What it is

🚨 An unrestricted file upload vulnerability in C21 Live Encoder could let attackers upload dangerous files freely—think of it as a bakery allowing anyone to sneak in uninspected ingredients! 🔥 Imagine a bakery with an open door policy, where anyone can walk in and drop off their own ingredients without a quality check. If you let in spoiled eggs or expired flour, the whole batch could be ruined – that’s what’s happening here with file uploads! An attacker could upload malicious scripts or executables, leading to a full system compromise. This means they could control the server, access sensitive data, and wreak havoc—absolutely devastating if left unchecked!

Put simply

Imagine a bakery with an open door policy, where anyone can walk in and drop off their own ingredients without a quality check. If you let in spoiled eggs or expired flour, the whole batch could be ruined – that’s what’s happening here with file uploads! This vulnerability allows remote attackers to upload files of any type to the C21 Live Encoder and Live Mosaic product, specifically in version 5.3, bypassing necessary security restrictions.

What to do

An attacker could upload malicious scripts or executables, leading to a full system compromise. This means they could control the server, access sensitive data, and wreak havoc—absolutely devastating if left unchecked! Patch the system to version 5.3.1 immediately to close this loophole. Additionally, implement strict validation on file uploads to ensure only safe file types are permitted. Regularly review and harden your upload policies! You've got this! Follow these steps to secure your system and keep your bakery—err, server—safe! 🛡️

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00670 · 51.4th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2024-01-17T13:44Z
EPSS history
Timeline
  • 17 JAN 13:44Z
    Unrestricted upload of dangerous file types in C21 Live Encoder and Live Mosaic
    cvelistv5