CVE-2021-27256

HIGH

8.8

Description

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.

Details CVE

Score CVSS v3.18.8

SeveriteHIGH

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

Vecteur d'attaqueADJACENT_NETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/5/2021

Derniere modification11/21/2024

Sourcenvd

Observations honeypot0

Produits affectes

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

Faiblesses (CWE)

CWE-78

References

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)

Correlations IOC

Aucune correlation enregistree

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