CVE-2021-27239
NETGEAR Multiple Routers SSDP Stack-based Buffer Overflow Remote Code Execution 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 execute arbitrary code on affected installations of NETGEAR R6400 and R6700 firmware version 1.0.4.98 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the upnpd service, which listens on UDP port 1900 by default. A crafted MX header field in an SSDP message can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11851.
Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar código arbitrario en las instalaciones afectadas de los enrutadores NETGEAR R6400 y R6700 versión de firmware 1.0.4.98. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta dentro del servicio upnpd, que escucha en el puerto UDP 1900 por defecto. Un campo de encabezado MX diseñado en un mensaje SSDP puede desencadenar un desbordamiento de un búfer en la región stack de la memoria de longitud corregida. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de root. Era ZDI-CAN-11851
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400 and R6700 routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the upnpd service, which listens on UDP port 1900 by default. A crafted MX header field in an SSDP message can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.
*Credits:
Anonymous
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
- 2021-02-16 CVE Reserved
- 2021-02-24 CVE Published
- 2024-04-15 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-121: Stack-based Buffer Overflow
CAPEC
References (2)
| URL | Tag | Source |
|---|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-21-206 | 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" | D6220 Firmware Search vendor "Netgear" for product "D6220 Firmware" | < 1.0.0.68 Search vendor "Netgear" for product "D6220 Firmware" and version " < 1.0.0.68" | - |
Affected
| in | Netgear Search vendor "Netgear" | D6220 Search vendor "Netgear" for product "D6220" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | D6400 Firmware Search vendor "Netgear" for product "D6400 Firmware" | < 1.0.0.102 Search vendor "Netgear" for product "D6400 Firmware" and version " < 1.0.0.102" | - |
Affected
| in | Netgear Search vendor "Netgear" | D6400 Search vendor "Netgear" for product "D6400" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | D7000 Firmware Search vendor "Netgear" for product "D7000 Firmware" | < 1.0.0.66 Search vendor "Netgear" for product "D7000 Firmware" and version " < 1.0.0.66" | - |
Affected
| in | Netgear Search vendor "Netgear" | D7000 Search vendor "Netgear" for product "D7000" | v2 Search vendor "Netgear" for product "D7000" and version "v2" | - |
Safe
|
| Netgear Search vendor "Netgear" | D8500 Firmware Search vendor "Netgear" for product "D8500 Firmware" | < 1.0.3.60 Search vendor "Netgear" for product "D8500 Firmware" and version " < 1.0.3.60" | - |
Affected
| in | Netgear Search vendor "Netgear" | D8500 Search vendor "Netgear" for product "D8500" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Dc112a Firmware Search vendor "Netgear" for product "Dc112a Firmware" | < 1.0.0.54 Search vendor "Netgear" for product "Dc112a Firmware" and version " < 1.0.0.54" | - |
Affected
| in | Netgear Search vendor "Netgear" | Dc112a Search vendor "Netgear" for product "Dc112a" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Ex7000 Firmware Search vendor "Netgear" for product "Ex7000 Firmware" | < 1.0.1.94 Search vendor "Netgear" for product "Ex7000 Firmware" and version " < 1.0.1.94" | - |
Affected
| in | Netgear Search vendor "Netgear" | Ex7000 Search vendor "Netgear" for product "Ex7000" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Ex7500 Firmware Search vendor "Netgear" for product "Ex7500 Firmware" | < 1.0.0.72 Search vendor "Netgear" for product "Ex7500 Firmware" and version " < 1.0.0.72" | - |
Affected
| in | Netgear Search vendor "Netgear" | Ex7500 Search vendor "Netgear" for product "Ex7500" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R6250 Firmware Search vendor "Netgear" for product "R6250 Firmware" | < 1.0.4.48 Search vendor "Netgear" for product "R6250 Firmware" and version " < 1.0.4.48" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6250 Search vendor "Netgear" for product "R6250" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R6300 Firmware Search vendor "Netgear" for product "R6300 Firmware" | < 1.0.4.50 Search vendor "Netgear" for product "R6300 Firmware" and version " < 1.0.4.50" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6300 Search vendor "Netgear" for product "R6300" | v2 Search vendor "Netgear" for product "R6300" and version "v2" | - |
Safe
|
| Netgear Search vendor "Netgear" | R6400 Firmware Search vendor "Netgear" for product "R6400 Firmware" | < 1.0.1.68 Search vendor "Netgear" for product "R6400 Firmware" and version " < 1.0.1.68" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6400 Search vendor "Netgear" for product "R6400" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R6400 Firmware Search vendor "Netgear" for product "R6400 Firmware" | < 1.0.4.102 Search vendor "Netgear" for product "R6400 Firmware" and version " < 1.0.4.102" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6400 Search vendor "Netgear" for product "R6400" | v2 Search vendor "Netgear" for product "R6400" and version "v2" | - |
Safe
|
| Netgear Search vendor "Netgear" | R6700 Firmware Search vendor "Netgear" for product "R6700 Firmware" | < 1.0.4.102 Search vendor "Netgear" for product "R6700 Firmware" and version " < 1.0.4.102" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6700 Search vendor "Netgear" for product "R6700" | v3 Search vendor "Netgear" for product "R6700" and version "v3" | - |
Safe
|
| Netgear Search vendor "Netgear" | R6900p Firmware Search vendor "Netgear" for product "R6900p Firmware" | < 1.3.2.132 Search vendor "Netgear" for product "R6900p Firmware" and version " < 1.3.2.132" | - |
Affected
| in | Netgear Search vendor "Netgear" | R6900p Search vendor "Netgear" for product "R6900p" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R7000 Firmware Search vendor "Netgear" for product "R7000 Firmware" | < 1.0.11.116 Search vendor "Netgear" for product "R7000 Firmware" and version " < 1.0.11.116" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7000 Search vendor "Netgear" for product "R7000" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R7000p Firmware Search vendor "Netgear" for product "R7000p Firmware" | < 1.3.2.132 Search vendor "Netgear" for product "R7000p Firmware" and version " < 1.3.2.132" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7000p Search vendor "Netgear" for product "R7000p" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R7100lg Firmware Search vendor "Netgear" for product "R7100lg Firmware" | < 1.0.0.64 Search vendor "Netgear" for product "R7100lg Firmware" and version " < 1.0.0.64" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7100lg Search vendor "Netgear" for product "R7100lg" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R7850 Firmware Search vendor "Netgear" for product "R7850 Firmware" | < 1.0.5.68 Search vendor "Netgear" for product "R7850 Firmware" and version " < 1.0.5.68" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7850 Search vendor "Netgear" for product "R7850" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R7900 Firmware Search vendor "Netgear" for product "R7900 Firmware" | < 1.0.4.38 Search vendor "Netgear" for product "R7900 Firmware" and version " < 1.0.4.38" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7900 Search vendor "Netgear" for product "R7900" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R7900p Firmware Search vendor "Netgear" for product "R7900p Firmware" | < 1.4.1.68 Search vendor "Netgear" for product "R7900p Firmware" and version " < 1.4.1.68" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7900p Search vendor "Netgear" for product "R7900p" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R7960p Firmware Search vendor "Netgear" for product "R7960p Firmware" | < 1.4.1.68 Search vendor "Netgear" for product "R7960p Firmware" and version " < 1.4.1.68" | - |
Affected
| in | Netgear Search vendor "Netgear" | R7960p Search vendor "Netgear" for product "R7960p" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R8000 Firmware Search vendor "Netgear" for product "R8000 Firmware" | < 1.0.4.68 Search vendor "Netgear" for product "R8000 Firmware" and version " < 1.0.4.68" | - |
Affected
| in | Netgear Search vendor "Netgear" | R8000 Search vendor "Netgear" for product "R8000" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R8000p Firmware Search vendor "Netgear" for product "R8000p Firmware" | < 1.4.1.68 Search vendor "Netgear" for product "R8000p Firmware" and version " < 1.4.1.68" | - |
Affected
| in | Netgear Search vendor "Netgear" | R8000p Search vendor "Netgear" for product "R8000p" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R8300 Firmware Search vendor "Netgear" for product "R8300 Firmware" | < 1.0.2.144 Search vendor "Netgear" for product "R8300 Firmware" and version " < 1.0.2.144" | - |
Affected
| in | Netgear Search vendor "Netgear" | R8300 Search vendor "Netgear" for product "R8300" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | R8500 Firmware Search vendor "Netgear" for product "R8500 Firmware" | < 1.0.2.144 Search vendor "Netgear" for product "R8500 Firmware" and version " < 1.0.2.144" | - |
Affected
| in | Netgear Search vendor "Netgear" | R8500 Search vendor "Netgear" for product "R8500" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rax200 Firmware Search vendor "Netgear" for product "Rax200 Firmware" | < 1.0.2.88 Search vendor "Netgear" for product "Rax200 Firmware" and version " < 1.0.2.88" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rax200 Search vendor "Netgear" for product "Rax200" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rax75 Firmware Search vendor "Netgear" for product "Rax75 Firmware" | < 1.0.3.102 Search vendor "Netgear" for product "Rax75 Firmware" and version " < 1.0.3.102" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rax75 Search vendor "Netgear" for product "Rax75" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rax80 Firmware Search vendor "Netgear" for product "Rax80 Firmware" | < 1.0.3.102 Search vendor "Netgear" for product "Rax80 Firmware" and version " < 1.0.3.102" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rax80 Search vendor "Netgear" for product "Rax80" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rbr750 Firmware Search vendor "Netgear" for product "Rbr750 Firmware" | < 3.2.17.12 Search vendor "Netgear" for product "Rbr750 Firmware" and version " < 3.2.17.12" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rbr750 Search vendor "Netgear" for product "Rbr750" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rbr850 Firmware Search vendor "Netgear" for product "Rbr850 Firmware" | < 3.2.17.12 Search vendor "Netgear" for product "Rbr850 Firmware" and version " < 3.2.17.12" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rbr850 Search vendor "Netgear" for product "Rbr850" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rbs40v Firmware Search vendor "Netgear" for product "Rbs40v Firmware" | < 2.6.2.4 Search vendor "Netgear" for product "Rbs40v Firmware" and version " < 2.6.2.4" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rbs40v Search vendor "Netgear" for product "Rbs40v" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rbs750 Firmware Search vendor "Netgear" for product "Rbs750 Firmware" | < 3.2.17.12 Search vendor "Netgear" for product "Rbs750 Firmware" and version " < 3.2.17.12" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rbs750 Search vendor "Netgear" for product "Rbs750" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rbs850 Firmware Search vendor "Netgear" for product "Rbs850 Firmware" | < 3.2.17.12 Search vendor "Netgear" for product "Rbs850 Firmware" and version " < 3.2.17.12" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rbs850 Search vendor "Netgear" for product "Rbs850" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Rs400 Firmware Search vendor "Netgear" for product "Rs400 Firmware" | <= 1.5.0.68 Search vendor "Netgear" for product "Rs400 Firmware" and version " <= 1.5.0.68" | - |
Affected
| in | Netgear Search vendor "Netgear" | Rs400 Search vendor "Netgear" for product "Rs400" | - | - |
Safe
|
| Netgear Search vendor "Netgear" | Wndr3400 Firmware Search vendor "Netgear" for product "Wndr3400 Firmware" | < 1.0.1.38 Search vendor "Netgear" for product "Wndr3400 Firmware" and version " < 1.0.1.38" | - |
Affected
| in | Netgear Search vendor "Netgear" | Wndr3400 Search vendor "Netgear" for product "Wndr3400" | v3 Search vendor "Netgear" for product "Wndr3400" and version "v3" | - |
Safe
|
| Netgear Search vendor "Netgear" | Wnr3500l Firmware Search vendor "Netgear" for product "Wnr3500l Firmware" | < 1.2.0.66 Search vendor "Netgear" for product "Wnr3500l Firmware" and version " < 1.2.0.66" | - |
Affected
| in | Netgear Search vendor "Netgear" | Wnr3500l Search vendor "Netgear" for product "Wnr3500l" | v2 Search vendor "Netgear" for product "Wnr3500l" and version "v2" | - |
Safe
|
| Netgear Search vendor "Netgear" | Xr300 Firmware Search vendor "Netgear" for product "Xr300 Firmware" | < 1.0.3.56 Search vendor "Netgear" for product "Xr300 Firmware" and version " < 1.0.3.56" | - |
Affected
| in | Netgear Search vendor "Netgear" | Xr300 Search vendor "Netgear" for product "Xr300" | - | - |
Safe
|