CVE-2020-27867
NETGEAR Multiple Routers mini_httpd Command Injection Remote Code Execution Vulnerability
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. When parsing the funjsq_access_token parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11653.
Esta vulnerabilidad permite a los atacantes adyacentes a la red ejecutar código arbitrario en las instalaciones afectadas de los routers NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100 y Nighthawk AC2400. Aunque la autenticación es necesaria para explotar esta vulnerabilidad, el mecanismo de autenticación existente puede ser evitado. El fallo específico existe en el servicio mini_httpd, que escucha en el puerto TCP 80 por defecto. Al analizar el parámetro funjsq_access_token, el proceso no valida correctamente una cadena suministrada por el usuario antes de utilizarla para ejecutar una llamada al sistema. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de root. Era ZDI-CAN-11653
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. When parsing the funjsq_access_token parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-10-27 CVE Reserved
- 2020-12-21 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC
References (2)
URL | Tag | Source |
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https://www.zerodayinitiative.com/advisories/ZDI-20-1423 | Third Party Advisory |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Netgear Search vendor "Netgear" | Ac2100 Firmware Search vendor "Netgear" for product "Ac2100 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "Ac2100 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | Ac2100 Search vendor "Netgear" for product "Ac2100" | - | - |
Safe
|
Netgear Search vendor "Netgear" | Ac2400 Firmware Search vendor "Netgear" for product "Ac2400 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "Ac2400 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | Ac2400 Search vendor "Netgear" for product "Ac2400" | - | - |
Safe
|
Netgear Search vendor "Netgear" | Ac2600 Firmware Search vendor "Netgear" for product "Ac2600 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "Ac2600 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | Ac2600 Search vendor "Netgear" for product "Ac2600" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6700 Firmware Search vendor "Netgear" for product "R6700 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "R6700 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6700 Search vendor "Netgear" for product "R6700" | v2 Search vendor "Netgear" for product "R6700" and version "v2" | - |
Safe
|
Netgear Search vendor "Netgear" | R6800 Firmware Search vendor "Netgear" for product "R6800 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "R6800 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6800 Search vendor "Netgear" for product "R6800" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6900 Firmware Search vendor "Netgear" for product "R6900 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "R6900 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6900 Search vendor "Netgear" for product "R6900" | v2 Search vendor "Netgear" for product "R6900" and version "v2" | - |
Safe
|
Netgear Search vendor "Netgear" | R7200 Firmware Search vendor "Netgear" for product "R7200 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "R7200 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7200 Search vendor "Netgear" for product "R7200" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R7350 Firmware Search vendor "Netgear" for product "R7350 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "R7350 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7350 Search vendor "Netgear" for product "R7350" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R7400 Firmware Search vendor "Netgear" for product "R7400 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "R7400 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7400 Search vendor "Netgear" for product "R7400" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R7450 Firmware Search vendor "Netgear" for product "R7450 Firmware" | < 1.2.0.76 Search vendor "Netgear" for product "R7450 Firmware" and version " < 1.2.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7450 Search vendor "Netgear" for product "R7450" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6220 Firmware Search vendor "Netgear" for product "R6220 Firmware" | < 1.1.0.104 Search vendor "Netgear" for product "R6220 Firmware" and version " < 1.1.0.104" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6220 Search vendor "Netgear" for product "R6220" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6230 Firmware Search vendor "Netgear" for product "R6230 Firmware" | < 1.1.0.104 Search vendor "Netgear" for product "R6230 Firmware" and version " < 1.1.0.104" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6230 Search vendor "Netgear" for product "R6230" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6260 Firmware Search vendor "Netgear" for product "R6260 Firmware" | < 1.1.0.78 Search vendor "Netgear" for product "R6260 Firmware" and version " < 1.1.0.78" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6260 Search vendor "Netgear" for product "R6260" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6330 Firmware Search vendor "Netgear" for product "R6330 Firmware" | < 1.1.0.78 Search vendor "Netgear" for product "R6330 Firmware" and version " < 1.1.0.78" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6330 Search vendor "Netgear" for product "R6330" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6350 Firmware Search vendor "Netgear" for product "R6350 Firmware" | < 1.1.0.78 Search vendor "Netgear" for product "R6350 Firmware" and version " < 1.1.0.78" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6350 Search vendor "Netgear" for product "R6350" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6850 Firmware Search vendor "Netgear" for product "R6850 Firmware" | < 1.1.0.78 Search vendor "Netgear" for product "R6850 Firmware" and version " < 1.1.0.78" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6850 Search vendor "Netgear" for product "R6850" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6120 Firmware Search vendor "Netgear" for product "R6120 Firmware" | < 1.0.0.76 Search vendor "Netgear" for product "R6120 Firmware" and version " < 1.0.0.76" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6120 Search vendor "Netgear" for product "R6120" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6020 Firmware Search vendor "Netgear" for product "R6020 Firmware" | < 1.0.0.48 Search vendor "Netgear" for product "R6020 Firmware" and version " < 1.0.0.48" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6020 Search vendor "Netgear" for product "R6020" | - | - |
Safe
|
Netgear Search vendor "Netgear" | R6080 Firmware Search vendor "Netgear" for product "R6080 Firmware" | < 1.0.0.48 Search vendor "Netgear" for product "R6080 Firmware" and version " < 1.0.0.48" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6080 Search vendor "Netgear" for product "R6080" | - | - |
Safe
|