CVE-2020-27872
NETGEAR R7450 Password Recovery External Control of Critical State Data Authentication Bypass Vulnerability
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7450 1.2.0.62_1.0.1 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 improper state tracking in the password recovery process. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11365.
Esta vulnerabilidad permite a atacantes adyacentes a la red omitir la autenticación en las instalaciones afectadas de los enrutadores NETGEAR R7450 versión 1.2.0.62_1.0.1. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta dentro del servicio mini_httpd, que escucha en el puerto TCP 80 por defecto. El problema resulta de un seguimiento inapropiado del estado en el proceso de recuperación de la contraseña. Un atacante puede aprovechar esto junto con otras vulnerabilidades para ejecutar código en el contexto root. Fue ZDI-CAN-11365
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7450 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 improper state tracking in the password recovery process. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root.
*Credits:
1sd3d of Viettel Cyber Security
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-10-27 CVE Reserved
- 2021-01-18 CVE Published
- 2023-09-11 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-642: External Control of Critical State Data
- CWE-668: Exposure of Resource to Wrong Sphere
CAPEC
References (2)
| URL | Tag | Source |
|---|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-21-071 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| 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
|