What is CVE-2018-21205?

CVE-2018-21205 is a vulnerability that affects certain NETGEAR devices, allowing an unauthenticated attacker to perform a stack-based buffer overflow.

Which NETGEAR devices are affected by CVE-2018-21205?

CVE-2018-21205 affects NETGEAR devices including D7800, EX2700, R6100, R7500, R7500v2, R7800, R9000, and WN2000RPTv3.

What is the severity of CVE-2018-21205?

The severity of CVE-2018-21205 is rated as high with a CVSS score of 8.8.

How can an attacker exploit CVE-2018-21205?

An attacker can exploit CVE-2018-21205 by sending a crafted HTTP request to the vulnerable NETGEAR device to trigger the stack-based buffer overflow.

Is there a fix for CVE-2018-21205?

Yes, NETGEAR has released firmware updates to mitigate the vulnerability. Users should update their affected devices to the latest firmware version provided by NETGEAR.

Vulnerability/
CVE-2018-21205

high

8.8

CWE

120 119

28/4/2020

5/8/2024

CVE-2018-21205: Buffer Overflow

First published: Tue Apr 28 2020(Updated: )

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D7800 before 1.0.1.30, EX2700 before 1.0.1.28, R6100 before 1.0.1.20, R7500 before 1.0.0.118, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.50, WN3100RPv2 before 1.0.0.56, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, and WNDR4500v3 before 1.0.0.50.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Netgear D7800 Firmware	<1.0.1.30
Netgear D7800
Netgear Ex2700 Firmware	<1.0.1.28
Netgear Ex2700
Netgear R6100 Firmware	<1.0.1.20
Netgear R6100
Netgear R7500 Firmware	<1.0.0.118
Netgear R7500
Netgear R7500 Firmware	<1.0.3.24
Netgear R7500	=v2
NETGEAR R7800 firmware	<1.0.2.40
NETGEAR R7800
Netgear R900 Firmware	<1.0.2.52
Netgear R900
Netgear Wn2000rpt Firmware	<1.0.1.20
Netgear Wn2000rpt	=v3
Netgear Wn3000rp Firmware	<1.0.2.50
Netgear Wn3000rp	=v3
Netgear Wn3100rp Firmware	<1.0.0.56
Netgear Wn3100rp	=v2
Netgear Wndr3700 Firmware	<1.0.2.96
Netgear WNDR3700	=v4
Netgear Wndr4300 Firmware	<1.0.2.98
Netgear Wndr4300
Netgear Wndr4300 Firmware	<1.0.0.50
Netgear Wndr4300	=v2
Netgear Wndr4500 Firmware	<1.0.0.50
Netgear WNDR4500	=v3

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Reference Links

https://kb.netgear.com/000055144/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2568

Frequently Asked Questions

What is CVE-2018-21205?
CVE-2018-21205 is a vulnerability that affects certain NETGEAR devices, allowing an unauthenticated attacker to perform a stack-based buffer overflow.
Which NETGEAR devices are affected by CVE-2018-21205?
CVE-2018-21205 affects NETGEAR devices including D7800, EX2700, R6100, R7500, R7500v2, R7800, R9000, and WN2000RPTv3.
What is the severity of CVE-2018-21205?
The severity of CVE-2018-21205 is rated as high with a CVSS score of 8.8.
How can an attacker exploit CVE-2018-21205?
An attacker can exploit CVE-2018-21205 by sending a crafted HTTP request to the vulnerable NETGEAR device to trigger the stack-based buffer overflow.
Is there a fix for CVE-2018-21205?
Yes, NETGEAR has released firmware updates to mitigate the vulnerability. Users should update their affected devices to the latest firmware version provided by NETGEAR.