CVE-2022-40514CWE-120

Buffer copy without checking size of input in WLAN Firmware

Critical · published February 9, 2023

CVSS v3.1
9.8
EPSS
0%
Percentile
40.1
In the wild
Unconfirmed
What it is

🔥 A crafty memory corruption flaw lurks in WLAN firmware, leading to potential havoc during reassociation! Think of this as a restaurant where the chef prepares meals without checking the portion sizes — if they don’t measure accurately, the plates could end up overflowing and creating a messy disaster. That’s what happens when the buffer copy doesn’t check the size of the input! An attacker could exploit this flaw to cause a crash or even execute arbitrary code, potentially taking over devices connected to the network. In worst-case scenarios, this could disrupt your entire wireless infrastructure!

Put simply

Think of this as a restaurant where the chef prepares meals without checking the portion sizes — if they don’t measure accurately, the plates could end up overflowing and creating a messy disaster. That’s what happens when the buffer copy doesn’t check the size of the input! This vulnerability stems from improper size validation when copying data in the WLAN firmware, particularly while processing CCKM IE in reassociation response frames. This oversight in memory management can lead to catastrophic failures.

What to do

An attacker could exploit this flaw to cause a crash or even execute arbitrary code, potentially taking over devices connected to the network. In worst-case scenarios, this could disrupt your entire wireless infrastructure! It's crucial to patch the affected WLAN firmware to the latest version to fix this vulnerability. Regularly audit your wireless systems and ensure that input validation is robust to prevent similar issues in the future. 🛡️ You've got this! Fixing this vulnerability will help keep your network safe and sound! 🚀

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
0.00475 · 40.1th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2023-02-09T06:58Z
EPSS history
Timeline
  • 09 FEB 06:58Z
    Buffer copy without checking size of input in WLAN Firmware
    cvelistv5