CVE-2021-34991: This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400v2 1.0.4.106_10.0.80 routers…

high8.8CVSS 3.1

AVAACLPRNUINSUCHIHAH

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400v2 1.0.4.106_10.0.80 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UPnP service, which listens on TCP port 5000 by default. When parsing the uuid request header, the process does not properly validate 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. Was ZDI-CAN-14110.

Affected

45 ranges· showing 25

Vendor	Product	Version range	Fixed in
netgear	cax80_firmware	< 2.1.3.5	2.1.3.5
netgear	d6220_firmware	< 1.0.0.76	1.0.0.76
netgear	d6400_firmware	< 1.0.0.108	1.0.0.108
netgear	d7000v2_firmware	< 1.0.0.76	1.0.0.76
netgear	dc112a_firmware	< 1.0.0.62	1.0.0.62
netgear	dgn2200v4_firmware	< 1.0.0.126	1.0.0.126
netgear	ex3700_firmware	< 1.0.0.94	1.0.0.94
netgear	ex3800_firmware	< 1.0.0.94	1.0.0.94
netgear	ex6120_firmware	< 1.0.0.66	1.0.0.66
netgear	ex6130_firmware	< 1.0.0.66	1.0.0.66
netgear	r6400_firmware	< 1.0.1.76	1.0.1.76
netgear	r6400v2	—	—
netgear	r6400v2_firmware	< 1.0.4.120	1.0.4.120
netgear	r6700v3_firmware	< 1.0.4.120	1.0.4.120
netgear	r6900p_firmware	< 1.3.3.142	1.3.3.142
netgear	r7000_firmware	< 1.0.11.128	1.0.11.128
netgear	r7000p_firmware	< 1.3.3.142	1.3.3.142
netgear	r7100lg_firmware	< 1.0.0.72	1.0.0.72
netgear	r7850_firmware	< 1.0.5.76	1.0.5.76
netgear	r7900p_firmware	< 1.4.2.84	1.4.2.84
netgear	r7960p_firmware	< 1.4.2.84	1.4.2.84
netgear	r8000_firmware	< 1.0.4.76	1.0.4.76
netgear	r8000p_firmware	< 1.4.2.84	1.4.2.84
netgear	r8300_firmware	< 1.0.2.156	1.0.2.156
netgear	r8500_firmware	< 1.0.2.156	1.0.2.156