CVE-2024-39802CWE-120

Multiple buffer overflow vulnerabilities exist in the qos.cgi qos_settings() functionality of Wavlink AC3000 M33A8.V5030.210505

Critical · published January 14, 2025

CVSS v3.1
9.1
EPSS
1%
Percentile
59.3
In the wild
Unconfirmed
What it is

🚨 Multiple buffer overflow vulnerabilities in the Wavlink AC3000 are like ticking time bombs waiting for the right HTTP request to go off! 🔥 Think of it like a restaurant where the chef has an open kitchen and allows customers to shout modifications to their orders. If a customer yells out an overly complicated request, the chef might break down under pressure and serve a chaotic dish, leading to a complete kitchen meltdown. These vulnerabilities can allow an authenticated attacker to trigger a stack-based buffer overflow, potentially leading to data corruption or arbitrary code execution on the device. This means an attacker could take control of the Wavlink AC3000, wreaking havoc on your network settings and data—absolutely devastating!

Put simply

Think of it like a restaurant where the chef has an open kitchen and allows customers to shout modifications to their orders. If a customer yells out an overly complicated request, the chef might break down under pressure and serve a chaotic dish, leading to a complete kitchen meltdown. The vulnerabilities stem from the `qos.cgi` qos_settings() functionality, where malformed HTTP requests can overflow the stack. Specifically, the `qos_dat` POST parameter is exploited, which can allow attackers to execute arbitrary code.

What to do

These vulnerabilities can allow an authenticated attacker to trigger a stack-based buffer overflow, potentially leading to data corruption or arbitrary code execution on the device. This means an attacker could take control of the Wavlink AC3000, wreaking havoc on your network settings and data—absolutely devastating! Immediately patch your Wavlink AC3000 device to the latest firmware version that addresses these vulnerabilities. Ensure that your network access is restricted to trusted users only, and consider implementing monitoring for unauthorized access attempts. You've got this! With these steps, you can secure your network and keep those pesky attackers at bay! 🛡️

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00902 · 59.3th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2025-01-14T14:21Z
EPSS history
Timeline
  • 14 JAN 14:21Z
    Multiple buffer overflow vulnerabilities exist in the qos.cgi qos_settings() functionality of Wavlink AC3000 M33A8.V5030.210505
    cvelistv5