CVE-2021-3125 (GCVE-0-2021-3125)

Vulnerability from cvelistv5 – Published: 2021-04-12 17:41 – Updated: 2024-08-03 16:45
VLAI
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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            "value": "In TP-Link TL-XDR3230 \u003c 1.0.12, TL-XDR1850 \u003c 1.0.9, TL-XDR1860 \u003c 1.0.14, TL-XDR3250 \u003c 1.0.2, TL-XDR6060 Turbo \u003c 1.1.8, TL-XDR5430 \u003c 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\u0027s 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."
          },
          {
            "lang": "es",
            "value": "En TP-Link TL-XDR3230 versiones anteriores a 1.0.12, TL-XDR1850 versiones anteriores a 1.0.9, TL-XDR1860 versiones anteriores a 1.0.14, TL-XDR3250 versiones anteriores a 1.0.2, TL-XDR6060 Turbo versiones anteriores a 1.1.8, TL-XDR5430 versiones anteriores a 1.0 .11, y posiblemente otros, cuando se utiliza IPv6, puede producirse un bucle de enrutamiento que genere un tr\u00e1fico de red excesivo entre un dispositivo afectado y el enrutador de su ISP aguas arriba. Esto ocurre cuando una ruta de prefijo de enlace apunta a un enlace punto a punto, una direcci\u00f3n IPv6 de destino pertenece al prefijo y no es una direcci\u00f3n IPv6 local, y un anuncio de enrutador es recibido con al menos un prefijo IPv6 \u00fanico global para el cual el flag on-link se establece"
          }
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        "id": "CVE-2021-3125",
        "lastModified": "2024-11-21T06:20:56.520",
        "metrics": {
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              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
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                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 4.3,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
                "version": "2.0"
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              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
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                "attackVector": "NETWORK",
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                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
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              "source": "nvd@nist.gov",
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        "published": "2021-04-12T19:15:14.753",
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            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://service.tp-link.com.cn/detail_download_8719.html"
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        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
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          {
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              {
                "lang": "en",
                "value": "CWE-834"
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    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:08:58+00:00",
      "cve": "CVE-2021-3125",
      "id": "CVE-2021-3125",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-3125",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3125.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.