CVE-2024-1527CWE-434

Unrestricted Upload of File with Dangerous Type in CMS Made Simple

Critical · published March 12, 2024

CVSS v3.1
9.8
EPSS
1%
Percentile
59.9
In the wild
Unconfirmed
What it is

🚨 An authenticated user can exploit this file upload flaw in CMS Made Simple to unleash chaos — think of it as allowing a guest into your kitchen to cook whatever they want! 🔥 Imagine you run a cafe with a strict policy: nobody gets in the kitchen unless they’re authorized. But what if a clever patron figured out a way to slip past the barriers and set off a blender? That’s exactly how this vulnerability works, letting users upload malicious files that could lead to remote command execution. If an attacker exploits this vulnerability, they could upload a webshell, granting them control over your server. This could lead to devastating consequences, such as data theft, website defacement, or complete system takeover.

Put simply

Imagine you run a cafe with a strict policy: nobody gets in the kitchen unless they’re authorized. But what if a clever patron figured out a way to slip past the barriers and set off a blender? That’s exactly how this vulnerability works, letting users upload malicious files that could lead to remote command execution. This unrestricted file upload vulnerability in CMS Made Simple (version 2.2.14) allows authenticated users to bypass security checks and upload files that can execute arbitrary commands on the server.

What to do

If an attacker exploits this vulnerability, they could upload a webshell, granting them control over your server. This could lead to devastating consequences, such as data theft, website defacement, or complete system takeover. To secure your system, upgrade to the latest version of CMS Made Simple immediately. Additionally, implement strict file type validation and limit the permissions of authenticated users to prevent unauthorized access. Don't forget to review your security protocols! You've got this! Follow these steps, and you'll secure your CMS Made Simple in no time. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00921 · 59.9th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2024-03-12T15:19Z
EPSS history
Timeline
  • 12 MAR 15:19Z
    Unrestricted Upload of File with Dangerous Type in CMS Made Simple
    cvelistv5