CVE-2024-39768CWE-120

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

Critical · published January 14, 2025

CVSS v3.1
9.1
EPSS
1%
Percentile
70.1
In the wild
Unconfirmed
What it is

🚨 A crafted HTTP request is all it takes to trigger multiple buffer overflow vulnerabilities in Wavlink's AC3000 M33A8! 🔥 Think of this like a restaurant where a chef gets overwhelmed by an unexpected flood of orders; a specially crafted request can cause the system to crash under pressure, leading to chaos in the kitchen! An attacker, armed with just the right request, could exploit these vulnerabilities to execute arbitrary code, potentially taking complete control over the affected device. This could lead to unauthorized access, data leakage, or even using the device as a stepping stone for further attacks. The stakes are high!

Put simply

Think of this like a restaurant where a chef gets overwhelmed by an unexpected flood of orders; a specially crafted request can cause the system to crash under pressure, leading to chaos in the kitchen! This vulnerability arises from stack-based buffer overflows in the set_qos() functionality, specifically triggered by the `cli_name` POST parameter in authenticated HTTP requests. If exploited, it can allow an attacker to overwrite memory and execute malicious code.

What to do

An attacker, armed with just the right request, could exploit these vulnerabilities to execute arbitrary code, potentially taking complete control over the affected device. This could lead to unauthorized access, data leakage, or even using the device as a stepping stone for further attacks. The stakes are high! To protect your systems, update to the latest firmware version that addresses these vulnerabilities. Ensure that any user authentication mechanisms are robust, and consider monitoring for unusual HTTP requests that could indicate an attempted exploit. Patching should be prioritized immediately due to the critical nature of this vulnerability! You've got this! Act quickly, patch those systems, and reinforce your defenses! 🛡️

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
0.01294 · 70.1th 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 internet.cgi set_qos() functionality of Wavlink AC3000 M33A8.V5030.210505
    cvelistv5