Critical · published January 14, 2025
🚨 Watch out! Multiple buffer overflow vulnerabilities are lurking in the qos.cgi of Wavlink AC3000 that could spell disaster! 🔥 This vulnerability is like a food order that gets wildly mixed up at a busy restaurant—if the chef doesn’t check the recipe properly, they end up serving a dish that can overflow the plate, causing chaos! An attacker with authenticated access could exploit these vulnerabilities, potentially leading to a complete system crash or even the ability to execute arbitrary code. It’s a recipe for absolute mayhem if not addressed, as they could compromise the device’s functionality entirely.
This vulnerability is like a food order that gets wildly mixed up at a busy restaurant—if the chef doesn’t check the recipe properly, they end up serving a dish that can overflow the plate, causing chaos! The buffer overflow vulnerabilities in qos.cgi's qos_settings() functionality are triggered by specially crafted HTTP requests, especially using the `qos_bandwidth` POST parameter, allowing an attacker to overwrite memory and potentially gain unauthorized control.
An attacker with authenticated access could exploit these vulnerabilities, potentially leading to a complete system crash or even the ability to execute arbitrary code. It’s a recipe for absolute mayhem if not addressed, as they could compromise the device’s functionality entirely. Immediately patch the Wavlink AC3000 firmware to the latest version to close these vulnerabilities. Additionally, review access controls to ensure only trusted users can make requests to the qos.cgi functionality. You're on the right track! Stay vigilant and follow these steps to lock it down! 🛡️