CVE-2021-34865
NETGEAR Multiple Routers mini_httpd Authentication Bypass Vulnerability
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-13313.
Esta vulnerabilidad permite a atacantes adyacentes a la red omitir la autenticación en las instalaciones afectadas de varios routers NETGEAR. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta en el servicio mini_httpd, que escucha en el puerto TCP 80 por defecto. El problema es debido a una lógica incorrecta de coincidencia de cadenas cuando es accedida a páginas protegidas. Un atacante puede aprovechar esta vulnerabilidad para escalar privilegios y ejecutar código arbitrario en el contexto de root. Fue ZDI-CAN-13313
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-06-17 CVE Reserved
- 2021-08-30 CVE Published
- 2024-08-04 CVE Updated
- 2024-10-10 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-287: Improper Authentication
- CWE-697: Incorrect Comparison
CAPEC
References (2)
| URL | Tag | Source |
|---|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-21-1051 | Third Party Advisory |
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| 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" | < 1.2.0.88 Search vendor "Netgear" for product "Ac2100 Firmware" and version " < 1.2.0.88" | - |
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" | < 1.2.0.88 Search vendor "Netgear" for product "Ac2400 Firmware" and version " < 1.2.0.88" | - |
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" | < 1.2.0.88 Search vendor "Netgear" for product "Ac2600 Firmware" and version " < 1.2.0.88" | - |
Affected
| in | Netgear Search vendor "Netgear" | Ac2600 Search vendor "Netgear" for product "Ac2600" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | D7000v1 Firmware Search vendor "Netgear" for product "D7000v1 Firmware" | < 1.0.1.80 Search vendor "Netgear" for product "D7000v1 Firmware" and version " < 1.0.1.80" | - |
Affected
| in | Netgear Search vendor "Netgear" | D7000v1 Search vendor "Netgear" for product "D7000v1" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R6220 Firmware Search vendor "Netgear" for product "R6220 Firmware" | < 1.1.0.110 Search vendor "Netgear" for product "R6220 Firmware" and version " < 1.1.0.110" | - |
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" | < 1.1.0.110 Search vendor "Netgear" for product "R6230 Firmware" and version " < 1.1.0.110" | - |
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" | < 1.1.0.84 Search vendor "Netgear" for product "R6260 Firmware" and version " < 1.1.0.84" | - |
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" | < 1.1.0.84 Search vendor "Netgear" for product "R6330 Firmware" and version " < 1.1.0.84" | - |
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" | < 1.1.0.84 Search vendor "Netgear" for product "R6350 Firmware" and version " < 1.1.0.84" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6350 Search vendor "Netgear" for product "R6350" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R6700v2 Firmware Search vendor "Netgear" for product "R6700v2 Firmware" | < 1.2.0.88 Search vendor "Netgear" for product "R6700v2 Firmware" and version " < 1.2.0.88" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6700v2 Search vendor "Netgear" for product "R6700v2" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R6800 Firmware Search vendor "Netgear" for product "R6800 Firmware" | < 1.2.0.88 Search vendor "Netgear" for product "R6800 Firmware" and version " < 1.2.0.88" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6800 Search vendor "Netgear" for product "R6800" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R6850 Firmware Search vendor "Netgear" for product "R6850 Firmware" | < 1.1.0.84 Search vendor "Netgear" for product "R6850 Firmware" and version " < 1.1.0.84" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6850 Search vendor "Netgear" for product "R6850" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R6900v2 Firmware Search vendor "Netgear" for product "R6900v2 Firmware" | < 1.2.0.88 Search vendor "Netgear" for product "R6900v2 Firmware" and version " < 1.2.0.88" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6900v2 Search vendor "Netgear" for product "R6900v2" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R7200 Firmware Search vendor "Netgear" for product "R7200 Firmware" | < 1.2.0.88 Search vendor "Netgear" for product "R7200 Firmware" and version " < 1.2.0.88" | - |
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" | < 1.2.0.88 Search vendor "Netgear" for product "R7350 Firmware" and version " < 1.2.0.88" | - |
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" | < 1.2.0.88 Search vendor "Netgear" for product "R7400 Firmware" and version " < 1.2.0.88" | - |
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" | < 1.2.0.88 Search vendor "Netgear" for product "R7450 Firmware" and version " < 1.2.0.88" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7450 Search vendor "Netgear" for product "R7450" | - | - |
Safe
|