Vulnerability Monitor

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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. 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.

Published

2021-11-15T16:15:09.547

Last Modified

2024-11-21T06:11:39.183

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:C/I:C/A:C

  • Access Vector: ADJACENT_NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

6.5

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-121
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System netgear ex3700_firmware < 1.0.0.94 Yes
Hardware netgear ex3700 - No
Operating System netgear ex3800_firmware < 1.0.0.94 Yes
Hardware netgear ex3800 - No
Operating System netgear ex6120_firmware < 1.0.0.66 Yes
Hardware netgear ex6120 - No
Operating System netgear ex6130_firmware < 1.0.0.66 Yes
Hardware netgear ex6130 - No
Operating System netgear r6400_firmware < 1.0.1.76 Yes
Hardware netgear r6400 - No
Operating System netgear r6400v2_firmware < 1.0.4.120 Yes
Hardware netgear r6400v2 - No
Operating System netgear r6700v3_firmware < 1.0.4.120 Yes
Hardware netgear r6700v3 - No
Operating System netgear r6900p_firmware < 1.3.3.142 Yes
Hardware netgear r6900p - No
Operating System netgear r7000_firmware < 1.0.11.128 Yes
Hardware netgear r7000 - No
Operating System netgear r7000p_firmware < 1.3.3.142 Yes
Hardware netgear r7000p - No
Operating System netgear r7100lg_firmware < 1.0.0.72 Yes
Hardware netgear r7100lg - No
Operating System netgear r7850_firmware < 1.0.5.76 Yes
Hardware netgear r7850 - No
Operating System netgear r7900p_firmware < 1.4.2.84 Yes
Hardware netgear r7900p - No
Operating System netgear r7960p_firmware < 1.4.2.84 Yes
Hardware netgear r7960p - No
Operating System netgear r8000_firmware < 1.0.4.76 Yes
Hardware netgear r8000 - No
Operating System netgear r8000p_firmware < 1.4.2.84 Yes
Hardware netgear r8000p - No
Operating System netgear r8300_firmware < 1.0.2.156 Yes
Hardware netgear r8300 - No
Operating System netgear r8500_firmware < 1.0.2.156 Yes
Hardware netgear r8500 - No
Operating System netgear rax15_firmware < 1.0.4.100 Yes
Hardware netgear rax15 - No
Operating System netgear rax20_firmware < 1.0.4.100 Yes
Hardware netgear rax20 - No
Operating System netgear rax200_firmware < 1.0.5.132 Yes
Hardware netgear rax200 - No
Operating System netgear rax35v2_firmware < 1.0.4.100 Yes
Hardware netgear rax35v2 - No
Operating System netgear rax38v2_firmware < 1.0.4.100 Yes
Hardware netgear rax38v2 - No
Operating System netgear rax40v2_firmware < 1.0.4.100 Yes
Hardware netgear rax40v2 - No
Operating System netgear rax42_firmware < 1.0.4.100 Yes
Hardware netgear rax42 - No
Operating System netgear rax43_firmware < 1.0.4.100 Yes
Hardware netgear rax43 - No
Operating System netgear rax45_firmware < 1.0.4.100 Yes
Hardware netgear rax45 - No
Operating System netgear rax48_firmware < 1.0.4.100 Yes
Hardware netgear rax48 - No
Operating System netgear rax50_firmware < 1.0.4.100 Yes
Hardware netgear rax50 - No
Operating System netgear rax50s_firmware < 1.0.4.100 Yes
Hardware netgear rax50s - No
Operating System netgear rax75_firmware < 1.0.5.132 Yes
Hardware netgear rax75 - No
Operating System netgear rax80_firmware < 1.0.5.132 Yes
Hardware netgear rax80 - No
Operating System netgear raxe450_firmware < 1.0.8.70 Yes
Hardware netgear raxe450 - No
Operating System netgear raxe500_firmware < 1.0.8.70 Yes
Hardware netgear raxe500 - No
Operating System netgear rs400_firmware < 1.5.1.80 Yes
Hardware netgear rs400 - No
Operating System netgear wndr3400v3_firmware < 1.0.1.42 Yes
Hardware netgear wndr3400v3 - No
Operating System netgear wnr3500lv2_firmware < 1.2.0.70 Yes
Hardware netgear wnr3500lv2 - No
Operating System netgear xr300_firmware < 1.0.3.68 Yes
Hardware netgear xr300 - No
Operating System netgear d6220_firmware < 1.0.0.76 Yes
Hardware netgear d6220 - No
Operating System netgear d6400_firmware < 1.0.0.108 Yes
Hardware netgear d6400 - No
Operating System netgear d7000v2_firmware < 1.0.0.76 Yes
Hardware netgear d7000v2 - No
Operating System netgear dgn2200v4_firmware < 1.0.0.126 Yes
Hardware netgear dgn2200v4 - No
Operating System netgear dc112a_firmware < 1.0.0.62 Yes
Hardware netgear dc112a - No
Operating System netgear cax80_firmware < 2.1.3.5 Yes
Hardware netgear cax80 - No
References