Advisory Details

October 28th, 2021

NETGEAR R6260 setupwizard.cgi Stack-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2021-34978
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	R6260
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the setupwizard.cgi page. A crafted SOAP request can trigger an overflow of 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/000064258/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-DSL-Modem-Routers-and-Access-Points-PSV-2021-0151-and-PSV-2021-0170?article=000064258
DISCLOSURE TIMELINE	2021-06-16 - Vulnerability reported to vendor 2021-10-28 - Coordinated public release of advisory
CREDIT	Sherman Chann Zhi Shen & Hoang Thach Nguyen (d4rkn3ss)

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