CVE-2021-34947

published 2024-05-07

CVE-2021-34947: NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code…

Priority P3 55 high 8.8 CVSS 3.0

AV A AC L PR N UI N S U C H I H A H

NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the parsing of the soap_block_table file. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of root.
. Was ZDI-CAN-13055.

Affected

42 ranges · showing 25

Vendor	Product	Version range	Fixed in
netgear	d7800_firmware	< 1.0.1.64	1.0.1.64
netgear	ex2700_firmware	< 1.0.1.66	1.0.1.66
netgear	ex6100_firmware	< 1.0.1.106	1.0.1.106
netgear	ex6150_firmware	< 1.0.1.106	1.0.1.106
netgear	ex6200_firmware	< 1.0.1.86	1.0.1.86
netgear	ex6250_firmware	< 1.0.0.146	1.0.0.146
netgear	ex6400_firmware	< 1.0.2.164	1.0.2.164
netgear	ex6400v2_firmware	< 1.0.0.146	1.0.0.146
netgear	ex6410_firmware	< 1.0.0.146	1.0.0.146
netgear	ex6420_firmware	< 1.0.0.146	1.0.0.146
netgear	ex6500v1_firmware	< 1.0.0.146	1.0.0.146
netgear	ex7300_firmware	< 1.0.2.164	1.0.2.164
netgear	ex7300v2_firmware	< 1.0.0.146	1.0.0.146
netgear	ex7320_firmware	< 1.0.0.146	1.0.0.146
netgear	ex7700_firmware	< 1.0.0.222	1.0.0.222
netgear	ex8000_firmware	< 1.0.1.238	1.0.1.238
netgear	lbr1020_firmware	< 2.6.5.32	2.6.5.32
netgear	lbr20_firmware	< 2.6.5.32	2.6.5.32
netgear	r6700ax_firmware	< 1.0.5.108	1.0.5.108
netgear	r7800	—	—
netgear	r7800_firmware	< 1.0.2.84	1.0.2.84
netgear	r8900_firmware	< 1.0.5.36	1.0.5.36
netgear	r9000_firmware	< 1.0.5.36	1.0.5.36
netgear	rax10_firmware	< 1.0.5.108	1.0.5.108
netgear	rax120_firmware	< 1.2.2.24	1.2.2.24

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CWE-787