fkie_cve-2021-27256
Vulnerability from fkie_nvd
Published
2021-03-05 20:15
Modified
2024-11-21 05:57
Summary
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of the rc_service parameter provided to apply_save.cgi. The issue results from the lack of proper validation of 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-12355.
Impacted products
Vendor Product Version
netgear br200_firmware *
netgear br200 -
netgear br500_firmware *
netgear br500 -
netgear d7800_firmware *
netgear d7800 -
netgear ex6100v2_firmware *
netgear ex6100v2 -
netgear ex6150v2_firmware *
netgear ex6150v2 -
netgear ex6250_firmware *
netgear ex6250 -
netgear ex6400_firmware *
netgear ex6400 -
netgear ex6400v2_firmware *
netgear ex6400v2 -
netgear ex6410_firmware *
netgear ex6410 -
netgear ex6420_firmware *
netgear ex6420 -
netgear ex7300_firmware *
netgear ex7300 -
netgear ex7300v2_firmware *
netgear ex7300v2 -
netgear ex7320_firmware *
netgear ex7320 -
netgear ex7700_firmware *
netgear ex7700 -
netgear ex8000_firmware *
netgear ex8000 -
netgear lbr20_firmware *
netgear lbr20 -
netgear r7800_firmware *
netgear r7800 -
netgear r8900_firmware *
netgear r8900 -
netgear r9000_firmware *
netgear r9000 -
netgear rbk12_firmware *
netgear rbk12 -
netgear rbk13_firmware *
netgear rbk13 -
netgear rbk14_firmware *
netgear rbk14 -
netgear rbk15_firmware *
netgear rbk15 -
netgear rbk20_firmware *
netgear rbk20 -
netgear rbk23_firmware *
netgear rbk23 -
netgear rbk40_firmware *
netgear rbk40 -
netgear rbk43_firmware *
netgear rbk43 -
netgear rbk43s_firmware *
netgear rbk43s -
netgear rbk44_firmware *
netgear rbk44 -
netgear rbk50_firmware *
netgear rbk50 -
netgear rbk53_firmware *
netgear rbk53 -
netgear rbr10_firmware *
netgear rbr10 -
netgear rbr20_firmware *
netgear rbr20 -
netgear rbr40_firmware *
netgear rbr40 -
netgear rbr50_firmware *
netgear rbr50 -
netgear rbs10_firmware *
netgear rbs10 -
netgear rbs20_firmware *
netgear rbs20 -
netgear rbs40_firmware *
netgear rbs40 -
netgear rbs50_firmware *
netgear rbs50 -
netgear rbs50y_firmware *
netgear rbs50y -
netgear xr450_firmware *
netgear xr450 -
netgear xr500_firmware *
netgear xr500 -
netgear xr700_firmware *
netgear xr700 -



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      "lang": "es",
      "value": "Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar c\u00f3digo arbitrario en instalaciones afectadas de NETGEAR R7800 versi\u00f3n de firmware 1.0.2.76.\u0026#xa0;Aunque es requerida una autenticaci\u00f3n para explotar esta vulnerabilidad, el mecanismo de autentificaci\u00f3n existente puede ser omitido.\u0026#xa0;El fallo espec\u00edfico se presenta dentro del manejo del par\u00e1metro rc_service proporcionado para el archivo apply_save.cgi.\u0026#xa0;El problema resulta de la falta de comprobaci\u00f3n apropiada de una cadena suministrada por el usuario antes de usarla para ejecutar una llamada al sistema.\u0026#xa0;Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto de root.\u0026#xa0;Era ZDI-CAN-12355"
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  "id": "CVE-2021-27256",
  "lastModified": "2024-11-21T05:57:42.160",
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}


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