7.5
HIGH
CVE-2021-3125
TP-Link IPv6 Routing Loop Vulnerability
Description

In TP-Link TL-XDR3230 < 1.0.12, TL-XDR1850 < 1.0.9, TL-XDR1860 < 1.0.14, TL-XDR3250 < 1.0.2, TL-XDR6060 Turbo < 1.1.8, TL-XDR5430 < 1.0.11, and possibly others, 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.

INFO

Published Date :

April 12, 2021, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 6:20 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-3125 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Tp-link tl-xdr3230_firmware
2 Tp-link tl-xdr5430_firmware
3 Tp-link tl-xdr3250_firmware
4 Tp-link tl-xdr1860_firmware
5 Tp-link tl-xdr1850_firmware
6 Tp-link tl-xdr6060_firmware
7 Tp-link tl-xdr3230
8 Tp-link tl-xdr5430
9 Tp-link tl-xdr3250
10 Tp-link tl-xdr1860
11 Tp-link tl-xdr1850
12 Tp-link tl-xdr6060

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-3125 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-3125 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://service.tp-link.com.cn/detail_download_8719.html
    Added Reference https://service.tp-link.com.cn/detail_download_8720.html
    Added Reference https://service.tp-link.com.cn/detail_download_8722.html
    Added Reference https://service.tp-link.com.cn/detail_download_8723.html
    Added Reference https://service.tp-link.com.cn/detail_download_8724.html
    Added Reference https://service.tp-link.com.cn/detail_download_8725.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Apr. 21, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://service.tp-link.com.cn/detail_download_8719.html No Types Assigned https://service.tp-link.com.cn/detail_download_8719.html Vendor Advisory
    Changed Reference Type https://service.tp-link.com.cn/detail_download_8720.html No Types Assigned https://service.tp-link.com.cn/detail_download_8720.html Vendor Advisory
    Changed Reference Type https://service.tp-link.com.cn/detail_download_8722.html No Types Assigned https://service.tp-link.com.cn/detail_download_8722.html Vendor Advisory
    Changed Reference Type https://service.tp-link.com.cn/detail_download_8723.html No Types Assigned https://service.tp-link.com.cn/detail_download_8723.html Vendor Advisory
    Changed Reference Type https://service.tp-link.com.cn/detail_download_8724.html No Types Assigned https://service.tp-link.com.cn/detail_download_8724.html Vendor Advisory
    Changed Reference Type https://service.tp-link.com.cn/detail_download_8725.html No Types Assigned https://service.tp-link.com.cn/detail_download_8725.html Vendor Advisory
    Added CWE NIST CWE-834
    Added CPE Configuration AND OR *cpe:2.3:o:tp-link:tl-xdr3230_firmware:*:*:*:*:*:easy_exhibition_turbo:*:* versions up to (excluding) 1.0.12 OR cpe:2.3:h:tp-link:tl-xdr3230:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:tp-link:tl-xdr5430_firmware:*:*:*:*:*:easy_exhibition:*:* versions up to (excluding) 1.0.11 OR cpe:2.3:h:tp-link:tl-xdr5430:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:tp-link:tl-xdr3250_firmware:*:*:*:*:*:easy_exhibition:*:* versions up to (excluding) 1.0.2 OR cpe:2.3:h:tp-link:tl-xdr3250:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:tp-link:tl-xdr1860_firmware:*:*:*:*:*:easy_exhibition:*:* versions up to (excluding) 1.0.14 OR cpe:2.3:h:tp-link:tl-xdr1860:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:tp-link:tl-xdr1850_firmware:*:*:*:*:*:easy_exhibition:*:* versions up to (excluding) 1.0.9 OR cpe:2.3:h:tp-link:tl-xdr1850:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:tp-link:tl-xdr6060_firmware:*:*:*:*:*:easy_exhibition:*:* versions up to (excluding) 1.1.8 OR cpe:2.3:h:tp-link:tl-xdr6060:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 12, 2021

    Action Type Old Value New Value
    Changed Description In TP-Link TL-XDR3230 < 1.0.12, TL-XDR1850 < 1.0.9, TL-XDR1860 < 1.0.14, TL-XDR3250 < 1.0.2, TL-XDR6060 Turbo < 1.1.8, TL-XDR5430 < 1.0.11, and possibly others, 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. This affects the netifd and odhcp6c packages. In TP-Link TL-XDR3230 < 1.0.12, TL-XDR1850 < 1.0.9, TL-XDR1860 < 1.0.14, TL-XDR3250 < 1.0.2, TL-XDR6060 Turbo < 1.1.8, TL-XDR5430 < 1.0.11, and possibly others, 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.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-3125 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-3125 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.62 }} 0.08%

score

0.76440

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability