This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis β
Q1What is this vulnerability? (Essence + Consequences)
π¨ **Essence**: A Command Injection flaw in Wavlink routers. π **Consequences**: Attackers can execute arbitrary commands as **root**. The core issue is unsanitized input in the login process.
Q2Root Cause? (CWE/Flaw)
π‘οΈ **Root Cause**: Improper input validation. Specifically, the **"key" parameter** in a login request is not filtered. This allows malicious payloads to bypass security checks and inject system commands.β¦
π¦ **Affected Products**: - **Wavlink WN575A4** - **Wavlink WN579X3** β οΈ *Note: Other Wavlink products may also be vulnerable.*
Q4What can hackers do? (Privileges/Data)
π **Attacker Capabilities**: - Execute **arbitrary commands**. - Gain **root privileges** (full system control). - Access sensitive device data. - Potentially compromise the entire network.
Q5Is exploitation threshold high? (Auth/Config)
π **Exploitation Threshold**: **LOW**. - **Unauthenticated**: No login required to exploit. - **Remote**: Can be triggered over the network. - Simple injection via the login endpoint.
Q6Is there a public Exp? (PoC/Wild Exploitation)
π **Public Exploits**: **YES**. - PoC available via **ProjectDiscovery Nuclei** templates. - References found on **0xlabs** and **GitHub**. - Active testing confirmed on WN575A4 and WN579X3.
Q7How to self-check? (Features/Scanning)
π **Self-Check**: - Use **Nuclei** with the CVE-2020-13117 template. - Scan for Wavlink devices exposing the vulnerable login API. - Check if the "key" parameter in login requests is vulnerable to injection.
π§ **Workaround**: - **Isolate** affected devices from the internet. - **Disable** remote management features if possible. - **Change** default credentials (though this doesn't fix the injection, it adds a layer). - Moniβ¦
π₯ **Urgency**: **CRITICAL**. - **Unauthenticated RCE** is a high-severity threat. - Easy to exploit with public tools. - **Action**: Patch or isolate immediately to prevent remote takeover.