GSD-2021-35033

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
A vulnerability in specific versions of Zyxel NBG6818, NBG7815, WSQ20, WSQ50, WSQ60, and WSR30 firmware with pre-configured password management could allow an attacker to obtain root access of the device, if the local attacker dismantles the device and uses a USB-to-UART cable to connect the device, or if the remote assistance feature had been enabled by an authenticated user.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2021-35033",
    "description": "A vulnerability in specific versions of Zyxel NBG6818, NBG7815, WSQ20, WSQ50, WSQ60, and WSR30 firmware with pre-configured password management could allow an attacker to obtain root access of the device, if the local attacker dismantles the device and uses a USB-to-UART cable to connect the device, or if the remote assistance feature had been enabled by an authenticated user.",
    "id": "GSD-2021-35033"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-35033"
      ],
      "details": "A vulnerability in specific versions of Zyxel NBG6818, NBG7815, WSQ20, WSQ50, WSQ60, and WSR30 firmware with pre-configured password management could allow an attacker to obtain root access of the device, if the local attacker dismantles the device and uses a USB-to-UART cable to connect the device, or if the remote assistance feature had been enabled by an authenticated user.",
      "id": "GSD-2021-35033",
      "modified": "2023-12-13T01:23:28.098490Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security@zyxel.com.tw",
        "ID": "CVE-2021-35033",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "NBG6818 series firmware",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "1.00(ABSC.0)C0 through 1.00(ABSC.4)C0"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "NBG7815 series firmware",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "1.00(ABSK.0)C0 through 1.00(ABSK.6)C0"
                        }
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                  },
                  {
                    "product_name": "WSQ20 series firmware",
                    "version": {
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                          "version_value": "1.00(ABOF.0)C0 through 1.00(ABOF.10)C0"
                        }
                      ]
                    }
                  },
                  {
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                    "version": {
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                        {
                          "version_value": "1.00(ABKJ.0)C0 through 2.20(ABKJ.6)C0"
                        }
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                    }
                  },
                  {
                    "product_name": "WSQ60 series firmware",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "1.00(ABND.0)C0 through 2.20(ABND.7)C0"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "WSR30 series firmware",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "1.00(ABMY.0)C0 through 1.00(ABMY.11)C0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Zyxel"
            }
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            "value": "A vulnerability in specific versions of Zyxel NBG6818, NBG7815, WSQ20, WSQ50, WSQ60, and WSR30 firmware with pre-configured password management could allow an attacker to obtain root access of the device, if the local attacker dismantles the device and uses a USB-to-UART cable to connect the device, or if the remote assistance feature had been enabled by an authenticated user."
          }
        ]
      },
      "impact": {
        "cvss": {
          "baseScore": "7.8",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        }
      },
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          {
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              {
                "lang": "eng",
                "value": "CWE-260: Password in Configuration File"
              }
            ]
          }
        ]
      },
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        "reference_data": [
          {
            "name": "https://www.zyxel.com/support/Zyxel_security_advisory_for_pre-configured_password_management_vulnerability_of_home_routers_and_WiFi_systems.shtml",
            "refsource": "CONFIRM",
            "url": "https://www.zyxel.com/support/Zyxel_security_advisory_for_pre-configured_password_management_vulnerability_of_home_routers_and_WiFi_systems.shtml"
          },
          {
            "name": "https://www.tenable.com/security/research/tra-2022-06",
            "refsource": "MISC",
            "url": "https://www.tenable.com/security/research/tra-2022-06"
          }
        ]
      }
    },
    "nvd.nist.gov": {
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          "ID": "CVE-2021-35033"
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "lang": "en",
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            }
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        "problemtype": {
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              "name": "https://www.zyxel.com/support/Zyxel_security_advisory_for_pre-configured_password_management_vulnerability_of_home_routers_and_WiFi_systems.shtml",
              "refsource": "CONFIRM",
              "tags": [
                "Vendor Advisory"
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 6.9,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-10-27T16:59Z",
      "publishedDate": "2021-11-23T22:15Z"
    }
  }
}



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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.

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