gsd-2021-3128
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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.
Aliases
Aliases



{
  "GSD": {
    "alias": "CVE-2021-3128",
    "description": "In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware \u003c 3.0.0.4.386.42095 or \u003c 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\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.",
    "id": "GSD-2021-3128"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-3128"
      ],
      "details": "In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware \u003c 3.0.0.4.386.42095 or \u003c 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\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.",
      "id": "GSD-2021-3128",
      "modified": "2023-12-13T01:23:34.585697Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-3128",
        "STATE": "PUBLIC"
      },
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                    "product_name": "n/a",
                    "version": {
                      "version_data": [
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                          "version_value": "n/a"
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              "vendor_name": "n/a"
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          }
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                "value": "n/a"
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          "ID": "CVE-2021-3128"
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              "refsource": "MISC",
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              "refsource": "MISC",
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                "Vendor Advisory"
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              "url": "https://www.asus.com/supportonly/RT-AC68W/HelpDesk_download/"
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            {
              "name": "https://www.asus.com/supportonly/RT-AC68P/HelpDesk_download/",
              "refsource": "MISC",
              "tags": [
                "Product",
                "Vendor Advisory"
              ],
              "url": "https://www.asus.com/supportonly/RT-AC68P/HelpDesk_download/"
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              "name": "https://www.asus.com/supportonly/RT-AC68R/HelpDesk_download/",
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                "Vendor Advisory"
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            {
              "name": "https://www.asus.com/supportonly/RT-AC85U/HelpDesk_download/",
              "refsource": "MISC",
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                "Vendor Advisory"
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              "url": "https://www.asus.com/supportonly/RT-AC85U/HelpDesk_download/"
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-04-20T21:50Z",
      "publishedDate": "2021-04-12T19:15Z"
    }
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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