CVE-2022-30506

An arbitrary file upload vulnerability was discovered in MCMS 5.2.7, allowing an attacker to execute arbitrary code through a crafted ZIP file

published May 27, 2022

CVSS
—
EPSS
3%
Percentile
86.0
In the wild
Unconfirmed
What it is

🚨 An improperly secured file upload in MCMS 5.2.7 could let an attacker slip past your defenses with a rogue ZIP file — like letting someone in just because they brought pizza! 🍕 Think of it like a restaurant that allows patrons to deliver food to the kitchen, but doesn’t check if it’s safe. An attacker can craft a ZIP file containing malicious code, which the server happily accepts without any verification. If exploited, this vulnerability could lead to full remote code execution, allowing the attacker to run their own commands on your server. Imagine someone taking over the kitchen and cooking whatever they want — your data, your settings, gone in a flash!

Put simply

Think of it like a restaurant that allows patrons to deliver food to the kitchen, but doesn’t check if it’s safe. An attacker can craft a ZIP file containing malicious code, which the server happily accepts without any verification. This arbitrary file upload vulnerability permits an attacker to upload a specifically crafted ZIP file that can execute arbitrary code on the server, completely bypassing security protocols intended to block such actions.

What to do

If exploited, this vulnerability could lead to full remote code execution, allowing the attacker to run their own commands on your server. Imagine someone taking over the kitchen and cooking whatever they want — your data, your settings, gone in a flash! To mitigate this issue, upgrade to the latest version of MCMS where this vulnerability has been patched. Additionally, implement strict validation and scanning of uploaded files to prevent malicious content from being executed. Regularly review your file upload functionality to ensure it meets security best practices. You've got this! With the right steps, you can protect your server from these sneaky uploads and keep your data safe! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02735 · 86.0th percentile
Published
2022-05-27T13:27Z
EPSS history
Timeline
  • 27 MAY 13:27Z
    An arbitrary file upload vulnerability was discovered in MCMS 5.2.7, allowing an attacker to execute arbitrary code through a crafted ZIP file
    cvelistv5