CVE-2021-27239

Published: Mar 29, 2021Modified: Nov 21, 2024

8.8

Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400 and R6700 firmware version 1.0.4.98 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the upnpd service, which listens on UDP port 1900 by default. A crafted MX header field in an SSDP message 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. Was ZDI-CAN-11851.

Affected (36)

Products: Netgear: D6220 Firmware, D6400 Firmware, D7000 Firmware, D8500 Firmware, Dc112a Firmware, Ex7000 Firmware, Ex7500 Firmware, R6250 Firmware, R6300 Firmware, R6400 Firmware, R6700 Firmware, R6900p Firmware, R7000 Firmware, R7000p Firmware, R7100lg Firmware, R7850 Firmware, R7900 Firmware, R7900p Firmware, R7960p Firmware, R8000 Firmware, R8000p Firmware, R8300 Firmware, R8500 Firmware, Rax200 Firmware, Rax75 Firmware, Rax80 Firmware, Rbr750 Firmware, Rbr850 Firmware, Rbs40v Firmware, Rbs750 Firmware, Rbs850 Firmware, Rs400 Firmware, Wndr3400 Firmware, Wnr3500l Firmware, Xr300 Firmware

35 products

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear D6220 Firmware	Before 1.0.0.68

Running on/with	Platform Versions
Netgear D6220	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear D6400 Firmware	Before 1.0.0.102

Running on/with	Platform Versions
Netgear D6400	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear D7000 Firmware	Before 1.0.0.66

Running on/with	Platform Versions
Netgear D7000	Version v2

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear D8500 Firmware	Before 1.0.3.60

Running on/with	Platform Versions
Netgear D8500	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Dc112a Firmware	Before 1.0.0.54

Running on/with	Platform Versions
Netgear Dc112a	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Ex7000 Firmware	Before 1.0.1.94

Running on/with	Platform Versions
Netgear Ex7000	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Ex7500 Firmware	Before 1.0.0.72

Running on/with	Platform Versions
Netgear Ex7500	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R6250 Firmware	Before 1.0.4.48

Running on/with	Platform Versions
Netgear R6250	All versions

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R6300 Firmware	Before 1.0.4.50

Running on/with	Platform Versions
Netgear R6300	Version v2

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R6400 Firmware	Before 1.0.1.68

Running on/with	Platform Versions
Netgear R6400	All versions

Configuration K

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R6400 Firmware	Before 1.0.4.102

Running on/with	Platform Versions
Netgear R6400	Version v2

Configuration L

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R6700 Firmware	Before 1.0.4.102

Running on/with	Platform Versions
Netgear R6700	Version v3

Configuration M

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R6900p Firmware	Before 1.3.2.132

Running on/with	Platform Versions
Netgear R6900p	All versions

Configuration N

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R7000 Firmware	Before 1.0.11.116

Running on/with	Platform Versions
Netgear R7000	All versions

Configuration O

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R7000p Firmware	Before 1.3.2.132

Running on/with	Platform Versions
Netgear R7000p	All versions

Configuration P

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R7100lg Firmware	Before 1.0.0.64

Running on/with	Platform Versions
Netgear R7100lg	All versions

Configuration Q

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R7850 Firmware	Before 1.0.5.68

Running on/with	Platform Versions
Netgear R7850	All versions

Configuration R

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R7900 Firmware	Before 1.0.4.38

Running on/with	Platform Versions
Netgear R7900	All versions

Configuration S

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R7900p Firmware	Before 1.4.1.68

Running on/with	Platform Versions
Netgear R7900p	All versions

Configuration T

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R7960p Firmware	Before 1.4.1.68

Running on/with	Platform Versions
Netgear R7960p	All versions

Configuration U

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R8000 Firmware	Before 1.0.4.68

Running on/with	Platform Versions
Netgear R8000	All versions

Configuration V

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R8000p Firmware	Before 1.4.1.68

Running on/with	Platform Versions
Netgear R8000p	All versions

Configuration W

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R8300 Firmware	Before 1.0.2.144

Running on/with	Platform Versions
Netgear R8300	All versions

Configuration X

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear R8500 Firmware	Before 1.0.2.144

Running on/with	Platform Versions
Netgear R8500	All versions

Configuration Y

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rax200 Firmware	Before 1.0.2.88

Running on/with	Platform Versions
Netgear Rax200	All versions

Configuration Z

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rax75 Firmware	Before 1.0.3.102

Running on/with	Platform Versions
Netgear Rax75	All versions

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rax80 Firmware	Before 1.0.3.102

Running on/with	Platform Versions
Netgear Rax80	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rbr750 Firmware	Before 3.2.17.12

Running on/with	Platform Versions
Netgear Rbr750	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rbr850 Firmware	Before 3.2.17.12

Running on/with	Platform Versions
Netgear Rbr850	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rbs40v Firmware	Before 2.6.2.4

Running on/with	Platform Versions
Netgear Rbs40v	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rbs750 Firmware	Before 3.2.17.12

Running on/with	Platform Versions
Netgear Rbs750	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rbs850 Firmware	Before 3.2.17.12

Running on/with	Platform Versions
Netgear Rbs850	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Rs400 Firmware	Up to 1.5.0.68

Running on/with	Platform Versions
Netgear Rs400	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Wndr3400 Firmware	Before 1.0.1.38

Running on/with	Platform Versions
Netgear Wndr3400	Version v3

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Wnr3500l Firmware	Before 1.2.0.66

Running on/with	Platform Versions
Netgear Wnr3500l	Version v2

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Netgear Xr300 Firmware	Before 1.0.3.56

Running on/with	Platform Versions
Netgear Xr300	All versions

Related CWEs

CWE-121

Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

References (4)

https://kb.netgear.com/000062820/Security-Advisory-for-Stack-based-Buffer-Overflow-Remote-Code-Execution-Vulnerability-on-Some-Routers-PSV-2020-0432

Source: zdi-disclosures@trendmicro.com

Vendor Advisory

https://www.zerodayinitiative.com/advisories/ZDI-21-206/

Source: zdi-disclosures@trendmicro.com

Third Party AdvisoryVDB Entry

https://kb.netgear.com/000062820/Security-Advisory-for-Stack-based-Buffer-Overflow-Remote-Code-Execution-Vulnerability-on-Some-Routers-PSV-2020-0432

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.zerodayinitiative.com/advisories/ZDI-21-206/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party AdvisoryVDB Entry

Timeline

No history available yet.