CVE-2021-27256

HIGH

8.8

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.18.8

SeveridadHIGH

Vector CVSSCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vector de ataqueADJACENT_NETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado3/5/2021

Ultima modificacion11/21/2024

Fuentenvd

Avistamientos honeypot0

Productos afectados

netgear:br200netgear:br200_firmwarenetgear:br500netgear:br500_firmwarenetgear:d7800netgear:d7800_firmwarenetgear:ex6100v2netgear:ex6100v2_firmwarenetgear:ex6150v2netgear:ex6150v2_firmwarenetgear:ex6250netgear:ex6250_firmwarenetgear:ex6400netgear:ex6400_firmwarenetgear:ex6400v2netgear:ex6400v2_firmwarenetgear:ex6410netgear:ex6410_firmwarenetgear:ex6420netgear:ex6420_firmwarenetgear:ex7300netgear:ex7300_firmwarenetgear:ex7300v2netgear:ex7300v2_firmwarenetgear:ex7320netgear:ex7320_firmwarenetgear:ex7700netgear:ex7700_firmwarenetgear:ex8000netgear:ex8000_firmwarenetgear:lbr20netgear:lbr20_firmwarenetgear:r7800netgear:r7800_firmwarenetgear:r8900netgear:r8900_firmwarenetgear:r9000netgear:r9000_firmwarenetgear:rbk12netgear:rbk12_firmwarenetgear:rbk13netgear:rbk13_firmwarenetgear:rbk14netgear:rbk14_firmwarenetgear:rbk15netgear:rbk15_firmwarenetgear:rbk20netgear:rbk20_firmwarenetgear:rbk23netgear:rbk23_firmwarenetgear:rbk40netgear:rbk40_firmwarenetgear:rbk43netgear:rbk43_firmwarenetgear:rbk43snetgear:rbk43s_firmwarenetgear:rbk44netgear:rbk44_firmwarenetgear:rbk50netgear:rbk50_firmwarenetgear:rbk53netgear:rbk53_firmwarenetgear:rbr10netgear:rbr10_firmwarenetgear:rbr20netgear:rbr20_firmwarenetgear:rbr40netgear:rbr40_firmwarenetgear:rbr50netgear:rbr50_firmwarenetgear:rbs10netgear:rbs10_firmwarenetgear:rbs20netgear:rbs20_firmwarenetgear:rbs40netgear:rbs40_firmwarenetgear:rbs50netgear:rbs50_firmwarenetgear:rbs50ynetgear:rbs50y_firmwarenetgear:xr450netgear:xr450_firmwarenetgear:xr500netgear:xr500_firmwarenetgear:xr700netgear:xr700_firmware

Debilidades (CWE)

CWE-78

Referencias

https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders(zdi-disclosures@trendmicro.com)

https://www.zerodayinitiative.com/advisories/ZDI-21-262/(zdi-disclosures@trendmicro.com)

https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders(af854a3a-2127-422b-91ae-364da2661108)

https://www.zerodayinitiative.com/advisories/ZDI-21-262/(af854a3a-2127-422b-91ae-364da2661108)

Correlaciones IOC

Sin correlaciones registradas

This product uses data from the NVD API but is not endorsed or certified by the NVD.