Advisory Details

February 24th, 2021

(Pwn2Own) NETGEAR Nighthawk R7800 ready-genie-cloud Insecure Download of Critical Component Remote Code Execution Vulnerability

CVE ID	CVE-2021-27251
CVSS SCORE	8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	NETGEAR
AFFECTED PRODUCTS	R7800
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Nighthawk R7800. Authentication is not required to exploit this vulnerability The specific flaw exists within handling of firmware updates. The issue results from a fallback to a insecure protocol to deliver updates. An attacker can leverage this vulnerability to execute code in the context of root.
ADDITIONAL DETAILS	NETGEAR has issued an update to correct this vulnerability. More details can be found at: https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders
DISCLOSURE TIMELINE	2020-11-05 - Vulnerability reported to vendor 2021-02-24 - Coordinated public release of advisory 2021-02-24 - Advisory Updated
CREDIT	Team FLASHBACK: Pedro Ribeiro (@pedrib1337 \| pedrib@gmail.com) + Radek Domanski (@RabbitPro)

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