Headline

CVE-2022-27643: Security Advisory for Pre-Authentication Buffer Overflow on Multiple Products, PSV-2021-0323

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of SOAP requests. When parsing the SOAPAction header, the process does not properly validate the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15692.

1 year ago

CVE

Open in Source

#vulnerability #mac #windows #perl #buffer_overflow #auth #zero_day #wifi

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Associated CVE ID: CVE-2022-27643

Associated ZDI ID: ZDI-CAN-15692

First published: 2022-03-17

NETGEAR is aware of a pre-authentication buffer overflow security vulnerability on multiple products. This vulnerability requires an attacker to have your WiFi password or an Ethernet connection to your router to be exploited.

NETGEAR has released fixes for this vulnerability on the following product models:

DSL Modem Routers

D6220 fixed in firmware version 1.0.0.80
D6400 fixed in firmware version 1.0.0.114
D7000v2 fixed in firmware version 1.0.0.80

Extenders

EX3700 fixed in firmware version 1.0.0.96
EX3800 fixed in firmware version 1.0.0.96
EX6120 fixed in firmware version 1.0.0.68
EX6130 fixed in firmware version 1.0.0.48

Fixed Wireless

R7100LG fixed in firmware version 1.0.0.76

Routers

R6400 fixed in firmware version 1.0.1.78
R6400v2 fixed in firmware version 1.0.4.126
R6700v3 fixed in firmware version 1.0.4.126
R6900P fixed in firmware version 1.3.3.148
R7000 fixed in firmware version 1.0.11.134
R7000P fixed in firmware version 1.3.3.148
R7850 fixed in firmware version 1.0.5.84
R7900P fixed in firmware version 1.4.3.88
R7960P fixed in firmware version 1.4.3.88
R8000 fixed in firmware version 1.0.4.84
R8000P fixed in firmware version 1.4.3.88
R8500 fixed in firmware version 1.0.2.158
RAX200 fixed in firmware version 1.0.6.138
RAX75 fixed in firmware version 1.0.6.138
RAX80 fixed in firmware version 1.0.6.138
RS400 fixed in firmware version 1.5.1.86
WNDR3400v3 fixed in firmware version 1.0.1.44
WNR3500Lv2 fixed in firmware version 1.2.0.72
XR300 fixed in firmware version 1.0.3.72

Wireless

DC112A fixed in firmware version 1.0.0.64

NETGEAR strongly recommends that you download the latest firmware as soon as possible.

To download the latest firmware for your NETGEAR product:

Visit NETGEAR Support.
Start typing your model number in the search box, then select your model from the drop-down menu as soon as it appears.
If you do not see a drop-down menu, make sure that you entered your model number correctly, or select a product category to browse for your product model.
Click Downloads.
Under Current Versions, select the download whose title begins with Firmware Version.
Click Download.
Follow the instructions in your product’s user manual, firmware release notes, or product support page to install the new firmware.

NETGEAR will not release fixes for this vulnerability on the following affected products as they are outside of the security support period:

DGN2200v4
V6510-1FXAUS

Disclaimer

This document is provided on an “as is” basis and does not imply any kind of guarantee or warranty, including the warranties of merchantability or fitness for a particular use. Your use of the information in the document or materials linked from the document is at your own risk. NETGEAR reserves the right to change or update this document at any time. NETGEAR expects to update this document as new information becomes available.

The pre-authentication buffer overflow vulnerability remains if you do not complete all recommended steps. NETGEAR is not responsible for any consequences that could have been avoided by following the recommendations in this notification.

Acknowledgements

Stephen Fewer of Relyze Software Limited (www.relyze.com) working with Trend Micro’s Zero Day Initiative

Additionally reported by Jean-Jamil Khalifé (for model R7000P)

Common Vulnerability Scoring System

CVSS Rating: High

CVSS Score: 7.3

CVSS Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Best Practices for Updating Firmware

We recommend that you keep your NETGEAR devices up to date with the latest firmware. Firmware updates contain security fixes, bug fixes, and new features for your NETGEAR products.

If your product is supported by one of our apps, using the app is the easiest way to update your firmware:

Orbi products: NETGEAR Orbi app
NETGEAR WiFi routers: NETGEAR Nighthawk app
Some NETGEAR Business products: NETGEAR Insight app (firmware updates through the app are available only for Insight subscribers)

If your product is not supported by one of our apps, you can always update your firmware manually by following the instructions in your product’s user manual, firmware release notes, or product support page. For more information, see Where can I find information about my NETGEAR product?.

Contact

We appreciate and value having security concerns brought to our attention. NETGEAR constantly monitors for both known and unknown threats. Being pro-active rather than re-active to emerging security issues is fundamental for product support at NETGEAR.

It is NETGEAR’s mission to be the innovative leader in connecting the world to the internet. To achieve this mission, we strive to earn and maintain the trust of those that use NETGEAR products for their connectivity.

To report a security vulnerability, visit http://www.netgear.com/about/security/.

If you are a NETGEAR customer with a security-related support concern, you can contact NETGEAR customer support at [email protected].

Revision History

2022-03-17: Published advisory

2022-03-22: Updated CVE ID

2022-03-22: Added EX3700, EX3800, EX6120, EX6130, R7850, R8000

2022-05-23:

Added R7900P, R7960P, R8000P, RAX200, RAX75, RAX80
Updated acknowledgements section

2022-05-31: Updated acknowledgements section

Last Updated:05/31/2022 | Article ID: 000064720

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This article applies to:

Wireless AX Router Nighthawk (WiFi 6) (3)
- RAX200
- RAX75
- RAX80
Wireless AC Router Nighthawk (12)
- R6700v3
- R6900P
- R7000
- R7000P
- R7100LG
- R7850
- R7900P
- R7960P
- R8000
- R8000P
- R8500
- RS400
Nighthawk Pro Gaming (1)
- XR300
DSL Gateway AC (3)
- D6220
- D6400
- D7000v2
DSL Gateway N (1)
- DGN2200v4
Range Extender AC (4)
- EX3700
- EX3800
- EX6120
- EX6130
Wireless AC Router (2)
- R6400
- R6400v2
Wireless N Router (2)
- WNDR3400v3
- WNR3500Lv2
USB Modem (1)
- DC112A

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