Advisory Details

December 15th, 2020

NETGEAR Orbi UA_Parser Host Name Command Injection Remote Code Execution Vulnerability

CVE ID	CVE-2020-27861
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	Orbi
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. 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/000062507/Security-Advisory-for-Unauthenticated-Command-Injection-Vulnerability-on-Some-Extenders-and-Orbi-WiFi-Systems
DISCLOSURE TIMELINE	2020-07-10 - Vulnerability reported to vendor 2020-12-15 - Coordinated public release of advisory
CREDIT	Shaunak Mirani

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