8.8

CVE-2021-34947

NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Netgear ≫ D7800 Firmware Version < 1.0.1.64
   Netgear ≫ D7800 Version -
Netgear ≫ Ex2700 Firmware Version < 1.0.1.66
   Netgear ≫ Ex2700 Version -
Netgear ≫ Ex6100 Firmware Version < 1.0.1.106
   Netgear ≫ Ex6100 Version v2
Netgear ≫ Ex6150 Firmware Version < 1.0.1.106
   Netgear ≫ Ex6150 Version v2
Netgear ≫ Ex6200 Firmware Version < 1.0.1.86
   Netgear ≫ Ex6200 Version v2
Netgear ≫ Ex6250 Firmware Version < 1.0.0.146
   Netgear ≫ Ex6250 Version -
Netgear ≫ Ex6400 Firmware Version < 1.0.2.164
   Netgear ≫ Ex6400 Version -
Netgear ≫ Ex6400v2 Firmware Version < 1.0.0.146
   Netgear ≫ Ex6400v2 Version -
Netgear ≫ Ex6410 Firmware Version < 1.0.0.146
   Netgear ≫ Ex6410 Version -
Netgear ≫ Ex6420 Firmware Version < 1.0.0.146
   Netgear ≫ Ex6420 Version -
Netgear ≫ Ex6500v1 Firmware Version < 1.0.0.146
   Netgear ≫ Ex6500v1 Version -
Netgear ≫ Ex7300 Firmware Version < 1.0.2.164
   Netgear ≫ Ex7300 Version -
Netgear ≫ Ex7300v2 Firmware Version < 1.0.0.146
   Netgear ≫ Ex7300v2 Version -
Netgear ≫ Ex7320 Firmware Version < 1.0.0.146
   Netgear ≫ Ex7320 Version -
Netgear ≫ Ex7700 Firmware Version < 1.0.0.222
   Netgear ≫ Ex7700 Version -
Netgear ≫ Ex8000 Firmware Version < 1.0.1.238
   Netgear ≫ Ex8000 Version -
Netgear ≫ Lbr1020 Firmware Version < 2.6.5.32
   Netgear ≫ Lbr1020 Version -
Netgear ≫ Lbr20 Firmware Version < 2.6.5.32
   Netgear ≫ Lbr20 Version -
Netgear ≫ R6700ax Firmware Version < 1.0.5.108
   Netgear ≫ R6700ax Version -
Netgear ≫ R7800 Firmware Version < 1.0.2.84
   Netgear ≫ R7800 Version -
Netgear ≫ R8900 Firmware Version < 1.0.5.36
   Netgear ≫ R8900 Version -
Netgear ≫ R9000 Firmware Version < 1.0.5.36
   Netgear ≫ R9000 Version -
Netgear ≫ Rax10 Firmware Version < 1.0.5.108
   Netgear ≫ Rax10 Version -
Netgear ≫ Rax120 Firmware Version < 1.2.2.24
   Netgear ≫ Rax120 Version -
Netgear ≫ Rax120v2 Firmware Version < 1.2.2.24
   Netgear ≫ Rax120v2 Version -
Netgear ≫ Rax70 Firmware Version < 1.0.5.108
   Netgear ≫ Rax70 Version -
Netgear ≫ Rax78 Firmware Version < 1.0.5.108
   Netgear ≫ Rax78 Version -
Netgear ≫ Rbr10 Firmware Version < 2.7.4.24
   Netgear ≫ Rbr10 Version -
Netgear ≫ Rbr20 Firmware Version < 2.7.4.24
   Netgear ≫ Rbr20 Version -
Netgear ≫ Rbr40 Firmware Version < 2.7.4.24
   Netgear ≫ Rbr40 Version -
Netgear ≫ Rbr50 Firmware Version < 2.7.4.24
   Netgear ≫ Rbr50 Version -
Netgear ≫ Rbs10 Firmware Version < 2.7.4.24
   Netgear ≫ Rbs10 Version -
Netgear ≫ Rbs20 Firmware Version < 2.7.4.24
   Netgear ≫ Rbs20 Version -
Netgear ≫ Rbs40 Firmware Version < 2.7.4.24
   Netgear ≫ Rbs40 Version -
Netgear ≫ Rbs50 Firmware Version < 2.7.4.24
   Netgear ≫ Rbs50 Version -
Netgear ≫ Rbs50y Firmware Version < 2.7.4.12
   Netgear ≫ Rbs50y Version -
Netgear ≫ Wn3000rpv2 Firmware Version < 1.0.0.88
   Netgear ≫ Wn3000rpv2 Version -
Netgear ≫ Wnr2000v5 Firmware Version < 1.0.0.78
   Netgear ≫ Wnr2000v5 Version -
Netgear ≫ Xr450 Firmware Version < 2.3.2.130
   Netgear ≫ Xr450 Version -
Netgear ≫ Xr500 Firmware Version < 2.3.2.130
   Netgear ≫ Xr500 Version -
Netgear ≫ Xr700 Firmware Version < 1.0.1.44
   Netgear ≫ Xr700 Version -
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.55% 0.415
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Trend Micro 8.8 2.8 5.9
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1116/
Third Party Advisory