Vulnerability Monitor

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CVE-2021-3128

In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware < 3.0.0.4.386.42095 or < 9.0.0.4.386.41994, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set.

Published

2021-04-12T19:15:14.830

Last Modified

2024-11-21T06:20:56.883

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-834
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System asus zenwifi_ax_\(xt8\)_firmware < 3.0.0.4.386.42095 Yes
Hardware asus zenwifi_ax_\(xt8\) - No
Operating System asus zenwifi_ax_\(xt8\)_firmware < 9.0.0.4.386.41994 Yes
Hardware asus zenwifi_ax_\(xt8\) - No
Operating System asus rt-ax3000_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ax3000 - No
Operating System asus rt-ax3000_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ax3000 - No
Operating System asus rt-ax55_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ax55 - No
Operating System asus rt-ax55_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ax55 - No
Operating System asus rt-ax56u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ax56u - No
Operating System asus rt-ax56u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ax56u - No
Operating System asus rt-ax58u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ax58u - No
Operating System asus rt-ax58u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ax58u - No
Operating System asus rt-ax68u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ax68u - No
Operating System asus rt-ax68u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ax68u - No
Operating System asus rt-ax82u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ax82u - No
Operating System asus rt-ax82u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ax82u - No
Operating System asus rt-ax86u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ax86u - No
Operating System asus rt-ax86u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ax86u - No
Operating System asus rt-ax88u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ax88u - No
Operating System asus rt-ax88u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ax88u - No
Operating System asus rt-ac66u_b1_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac66u_b1 - No
Operating System asus rt-ac66u_b1_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac66u_b1 - No
Operating System asus rt-ac1750_b1_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac1750_b1 - No
Operating System asus rt-ac1750_b1_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac1750_b1 - No
Operating System asus rt-ac1900_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac1900 - No
Operating System asus rt-ac1900_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac1900 - No
Operating System asus rt-ac1900p_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac1900p - No
Operating System asus rt-ac1900p_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac1900p - No
Operating System asus rt-ac1900u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac1900u - No
Operating System asus rt-ac1900u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac1900u - No
Operating System asus rt-ac2900_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac2900 - No
Operating System asus rt-ac2900_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac2900 - No
Operating System asus rt-ac3100_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac3100 - No
Operating System asus rt-ac3100_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac3100 - No
Operating System asus rt-ac5300_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac5300 - No
Operating System asus rt-ac5300_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac5300 - No
Operating System asus rt-ac58u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac58u - No
Operating System asus rt-ac58u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac58u - No
Operating System asus rt-ac65u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac65u - No
Operating System asus rt-ac65u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac65u - No
Operating System asus rt-ac68p_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac68p - No
Operating System asus rt-ac68p_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac68p - No
Operating System asus rt-ac68r_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac68r - No
Operating System asus rt-ac68r_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac68r - No
Operating System asus rt-ac68rw_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac68rw - No
Operating System asus rt-ac68rw_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac68rw - No
Operating System asus rt-ac68u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac68u - No
Operating System asus rt-ac68u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac68u - No
Operating System asus rt-ac68w_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac68w - No
Operating System asus rt-ac68w_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac68w - No
Operating System asus rt-ac85u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac85u - No
Operating System asus rt-ac85u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac85u - No
Operating System asus rt-ac86u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac86u - No
Operating System asus rt-ac86u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac86u - No
Operating System asus rt-ac88u_firmware < 3.0.0.4.386.42095 Yes
Hardware asus rt-ac88u - No
Operating System asus rt-ac88u_firmware < 9.0.0.4.386.41994 Yes
Hardware asus rt-ac88u - No
References