CVE-2024-36671

nodemcu before v3.0.0-release_20240225 was discovered to contain an integer overflow via the getnum function at /modules/struct.c

Critical · published November 29, 2024

CVSS v3.1
9.8
EPSS
1%
Percentile
55.2
In the wild
Unconfirmed
What it is

🔥 An integer overflow in nodemcu could turn your project into a rollercoaster ride of chaos! Imagine a delivery truck that keeps accepting packages without checking the weight limit — eventually, it tips over under the pressure. This vulnerability allows attackers to exploit the getnum function, pushing data beyond its limits and causing instability in your system. If an attacker exploits this vulnerability, they could potentially crash your application or, even worse, execute arbitrary code. This could lead to a complete compromise of your device's functionality and security, leaving your project vulnerable to further attacks. The damage could be absolutely devastating if left unaddressed!

Put simply

Imagine a delivery truck that keeps accepting packages without checking the weight limit — eventually, it tips over under the pressure. This vulnerability allows attackers to exploit the getnum function, pushing data beyond its limits and causing instability in your system. This critical vulnerability in nodemcu before version 3.0.0-release_20240225 stems from an integer overflow in the getnum function located in /modules/struct.c, enabling attackers to manipulate data in ways that exceed the expected limits.

What to do

If an attacker exploits this vulnerability, they could potentially crash your application or, even worse, execute arbitrary code. This could lead to a complete compromise of your device's functionality and security, leaving your project vulnerable to further attacks. The damage could be absolutely devastating if left unaddressed! To mitigate this threat, update nodemcu to version 3.0.0-release_20240225 or later immediately. Additionally, review your code for any potential integer handling issues and implement input validation to prevent similar vulnerabilities in the future. You've got this! With these updates, you can secure your project and keep it on the right track! 🛡️

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
0.00770 · 55.2th percentile
Published
2024-11-29T00:00Z
EPSS history
Timeline
  • 29 NOV 00:00Z
    nodemcu before v3.0.0-release_20240225 was discovered to contain an integer overflow via the getnum function at /modules/struct.c
    cvelistv5