Advisory Details

May 1st, 2023

NETGEAR RAX30 rex_cgi JSON Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2023-27361
CVSS SCORE	6.8, AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	NETGEAR
AFFECTED PRODUCTS	RAX30
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR RAX30 routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of JSON data. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. 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/000065625/Security-Advisory-for-Post-Authentication-Buffer-Overflow-on-the-RAX30-PSV-2022-0302
DISCLOSURE TIMELINE	2022-11-23 - Vulnerability reported to vendor 2023-05-01 - Coordinated public release of advisory
CREDIT	Rocco Calvi (@TecR0c) and Steven Seeley of Incite Team

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