Critical · published February 1, 2020
CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 100.0th percentile for exploit probability.
🚨 A crafty URL with some sneaky characters is all it takes for remote code execution on DrayTek Vigor devices — and guess what? No password required! 🔥 Think of it like a restaurant that lets anyone walk into the kitchen just by using a specific phrase. The chefs (your devices) have no idea that an unauthorized person (the attacker) can whip up whatever dish they want, potentially ruining the entire menu! An attacker could gain root access to your device, allowing them to manipulate settings, siphon off sensitive data, or even take control of your entire network. This breach could lead to disastrous consequences, from data leaks to a full system compromise, putting both your business and users at risk.
Think of it like a restaurant that lets anyone walk into the kitchen just by using a specific phrase. The chefs (your devices) have no idea that an unauthorized person (the attacker) can whip up whatever dish they want, potentially ruining the entire menu! This vulnerability allows for remote code execution by exploiting shell metacharacters in the cgi-bin/mainfunction.cgi URI, effectively bypassing any authentication measures. In essence, it opens the door wide for attackers to execute any command they desire on the affected devices.
An attacker could gain root access to your device, allowing them to manipulate settings, siphon off sensitive data, or even take control of your entire network. This breach could lead to disastrous consequences, from data leaks to a full system compromise, putting both your business and users at risk. Immediately update affected devices (Vigor2960 1.3.1_Beta, Vigor3900 1.4.4_Beta, Vigor300B 1.3.3_Beta, 1.4.2.1_Beta, and 1.4.4_Beta) to the fixed version 1.5.1. Additionally, review your network's access logs to ensure no unauthorized commands were executed during the vulnerability window. You've got this! With the right steps, you'll secure your devices and protect your network like a pro! 🛡️