variot - var-202103-0948

var-202103-0948

Vulnerability from variot

This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362. NETGEAR R7800 There is a certificate validation vulnerability in the firmware. Zero Day Initiative To this vulnerability ZDI-CAN-12362 Was numbered.Information may be tampered with. Netgear NETGEAR R7800 is a wireless router from Netgear

Show details on source website

JSON

To clipboard

{
  "affected_products": {
    "_id": null,
    "data": [
      {
        "_id": null,
        "model": "r7800",
        "scope": null,
        "trust": 1.3,
        "vendor": "netgear",
        "version": null
      },
      {
        "_id": null,
        "model": "rbk53",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "r9000",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.5.28"
      },
      {
        "_id": null,
        "model": "ex6250",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.0.134"
      },
      {
        "_id": null,
        "model": "r7800",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.2.80"
      },
      {
        "_id": null,
        "model": "rbr20",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "r8900",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.5.28"
      },
      {
        "_id": null,
        "model": "rbk20",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "rbk40",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "ex6400",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.2.158"
      },
      {
        "_id": null,
        "model": "rbs50",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "rbs10",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "rbk12",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "rbs40",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "d7800",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.1.60"
      },
      {
        "_id": null,
        "model": "ex6420",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.0.134"
      },
      {
        "_id": null,
        "model": "ex7300",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.2.158"
      },
      {
        "_id": null,
        "model": "ex6400v2",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.0.134"
      },
      {
        "_id": null,
        "model": "ex7320",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.0.134"
      },
      {
        "_id": null,
        "model": "rbr50",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "rbk13",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "rbk23",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "br200",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "5.10.0.5"
      },
      {
        "_id": null,
        "model": "rbk44",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "xr500",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.3.2.114"
      },
      {
        "_id": null,
        "model": "lbr20",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.3.50"
      },
      {
        "_id": null,
        "model": "ex6150v2",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.1.98"
      },
      {
        "_id": null,
        "model": "rbs20",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "ex6410",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.0.134"
      },
      {
        "_id": null,
        "model": "rbs50y",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "rbk50",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "xr450",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.3.2.114"
      },
      {
        "_id": null,
        "model": "br500",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "5.10.0.5"
      },
      {
        "_id": null,
        "model": "rbk14",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "ex7300v2",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.0.134"
      },
      {
        "_id": null,
        "model": "xr700",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.1.38"
      },
      {
        "_id": null,
        "model": "rbr40",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "ex6100v2",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.1.98"
      },
      {
        "_id": null,
        "model": "rbk43",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "ex7700",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.0.216"
      },
      {
        "_id": null,
        "model": "rbr10",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "rbk43s",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.6.2.104"
      },
      {
        "_id": null,
        "model": "ex8000",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "1.0.1.232"
      },
      {
        "_id": null,
        "model": "rbk15",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "netgear",
        "version": "2.7.2.104"
      },
      {
        "_id": null,
        "model": "ex6150v2",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "br500",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "ex6250",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "ex6410",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "ex6400v2",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "ex6400",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "ex6420",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "br200",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "ex6100v2",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      },
      {
        "_id": null,
        "model": "d7800",
        "scope": null,
        "trust": 0.8,
        "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2",
        "version": null
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-21-264"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-27257"
      }
    ]
  },
  "credits": {
    "_id": null,
    "data": "Team FLASHBACK: Pedro Ribeiro (@pedrib1337 | pedrib@gmail.com)  + Radek Domanski (@RabbitPro)",
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-21-264"
      }
    ],
    "trust": 0.7
  },
  "cve": "CVE-2021-27257",
  "cvss": {
    "_id": null,
    "data": [
      {
        "cvssV2": [
          {
            "accessComplexity": "LOW",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "NONE",
            "author": "nvd@nist.gov",
            "availabilityImpact": "NONE",
            "baseScore": 3.3,
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 6.5,
            "id": "CVE-2021-27257",
            "impactScore": 2.9,
            "integrityImpact": "PARTIAL",
            "severity": "LOW",
            "trust": 1.9,
            "vectorString": "AV:A/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          {
            "accessComplexity": "LOW",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "NONE",
            "author": "CNVD",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 6.5,
            "id": "CNVD-2021-14775",
            "impactScore": 6.9,
            "integrityImpact": "COMPLETE",
            "severity": "MEDIUM",
            "trust": 0.6,
            "vectorString": "AV:A/AC:L/Au:N/C:N/I:C/A:N",
            "version": "2.0"
          }
        ],
        "cvssV3": [
          {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT",
            "author": "zdi-disclosures@trendmicro.com",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 2.8,
            "id": "CVE-2021-27257",
            "impactScore": 3.6,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "trust": 1.8,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
          {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT",
            "author": "nvd@nist.gov",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 2.8,
            "id": "CVE-2021-27257",
            "impactScore": 3.6,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "trust": 1.0,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT",
            "author": "ZDI",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 2.8,
            "id": "CVE-2021-27257",
            "impactScore": 3.6,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "trust": 0.7,
            "userInteraction": "NONE",
            "vectorString": "AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          }
        ],
        "severity": [
          {
            "author": "nvd@nist.gov",
            "id": "CVE-2021-27257",
            "trust": 1.0,
            "value": "MEDIUM"
          },
          {
            "author": "zdi-disclosures@trendmicro.com",
            "id": "CVE-2021-27257",
            "trust": 1.0,
            "value": "MEDIUM"
          },
          {
            "author": "NVD",
            "id": "CVE-2021-27257",
            "trust": 0.8,
            "value": "Medium"
          },
          {
            "author": "ZDI",
            "id": "CVE-2021-27257",
            "trust": 0.7,
            "value": "MEDIUM"
          },
          {
            "author": "CNVD",
            "id": "CNVD-2021-14775",
            "trust": 0.6,
            "value": "MEDIUM"
          },
          {
            "author": "CNNVD",
            "id": "CNNVD-202102-1752",
            "trust": 0.6,
            "value": "MEDIUM"
          },
          {
            "author": "VULMON",
            "id": "CVE-2021-27257",
            "trust": 0.1,
            "value": "LOW"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-21-264"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775"
      },
      {
        "db": "VULMON",
        "id": "CVE-2021-27257"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202102-1752"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-27257"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-27257"
      }
    ]
  },
  "description": {
    "_id": null,
    "data": "This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362. NETGEAR R7800 There is a certificate validation vulnerability in the firmware. Zero Day Initiative To this vulnerability ZDI-CAN-12362 Was numbered.Information may be tampered with. Netgear NETGEAR R7800 is a wireless router from Netgear",
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2021-27257"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503"
      },
      {
        "db": "ZDI",
        "id": "ZDI-21-264"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775"
      },
      {
        "db": "VULMON",
        "id": "CVE-2021-27257"
      }
    ],
    "trust": 2.88
  },
  "external_ids": {
    "_id": null,
    "data": [
      {
        "db": "NVD",
        "id": "CVE-2021-27257",
        "trust": 3.8
      },
      {
        "db": "ZDI",
        "id": "ZDI-21-264",
        "trust": 3.8
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503",
        "trust": 0.8
      },
      {
        "db": "ZDI_CAN",
        "id": "ZDI-CAN-12362",
        "trust": 0.7
      },
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775",
        "trust": 0.6
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202102-1752",
        "trust": 0.6
      },
      {
        "db": "VULMON",
        "id": "CVE-2021-27257",
        "trust": 0.1
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-21-264"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775"
      },
      {
        "db": "VULMON",
        "id": "CVE-2021-27257"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202102-1752"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-27257"
      }
    ]
  },
  "id": "VAR-202103-0948",
  "iot": {
    "_id": null,
    "data": true,
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775"
      }
    ],
    "trust": 0.8616114078947368
  },
  "iot_taxonomy": {
    "_id": null,
    "data": [
      {
        "category": [
          "Network device"
        ],
        "sub_category": null,
        "trust": 0.6
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775"
      }
    ]
  },
  "last_update_date": "2024-11-23T22:54:53.310000Z",
  "patch": {
    "_id": null,
    "data": [
      {
        "title": "Security\u00a0Advisory\u00a0for\u00a0Multiple\u00a0Vulnerabilities\u00a0on\u00a0Some\u00a0Routers,\u00a0Satellites,\u00a0and\u00a0Extenders",
        "trust": 1.5,
        "url": "https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders"
      },
      {
        "title": "Patch for NETGEAR remote code execution vulnerability",
        "trust": 0.6,
        "url": "https://www.cnvd.org.cn/patchInfo/show/251011"
      },
      {
        "title": "NETGEAR Security vulnerabilities",
        "trust": 0.6,
        "url": "http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=142983"
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-21-264"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202102-1752"
      }
    ]
  },
  "problemtype_data": {
    "_id": null,
    "data": [
      {
        "problemtype": "CWE-295",
        "trust": 1.0
      },
      {
        "problemtype": "Bad certificate verification (CWE-295) [ Other ]",
        "trust": 0.8
      }
    ],
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-27257"
      }
    ]
  },
  "references": {
    "_id": null,
    "data": [
      {
        "trust": 3.8,
        "url": "https://www.zerodayinitiative.com/advisories/zdi-21-264/"
      },
      {
        "trust": 2.4,
        "url": "https://kb.netgear.com/000062883/security-advisory-for-multiple-vulnerabilities-on-some-routers-satellites-and-extenders"
      },
      {
        "trust": 1.4,
        "url": "https://nvd.nist.gov/vuln/detail/cve-2021-27257"
      },
      {
        "trust": 0.1,
        "url": "https://cwe.mitre.org/data/definitions/295.html"
      },
      {
        "trust": 0.1,
        "url": "https://nvd.nist.gov"
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-21-264"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775"
      },
      {
        "db": "VULMON",
        "id": "CVE-2021-27257"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202102-1752"
      },
      {
        "db": "NVD",
        "id": "CVE-2021-27257"
      }
    ]
  },
  "sources": {
    "_id": null,
    "data": [
      {
        "db": "ZDI",
        "id": "ZDI-21-264",
        "ident": null
      },
      {
        "db": "CNVD",
        "id": "CNVD-2021-14775",
        "ident": null
      },
      {
        "db": "VULMON",
        "id": "CVE-2021-27257",
        "ident": null
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503",
        "ident": null
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202102-1752",
        "ident": null
      },
      {
        "db": "NVD",
        "id": "CVE-2021-27257",
        "ident": null
      }
    ]
  },
  "sources_release_date": {
    "_id": null,
    "data": [
      {
        "date": "2021-02-26T00:00:00",
        "db": "ZDI",
        "id": "ZDI-21-264",
        "ident": null
      },
      {
        "date": "2021-03-06T00:00:00",
        "db": "CNVD",
        "id": "CNVD-2021-14775",
        "ident": null
      },
      {
        "date": "2021-03-05T00:00:00",
        "db": "VULMON",
        "id": "CVE-2021-27257",
        "ident": null
      },
      {
        "date": "2021-11-24T00:00:00",
        "db": "JVNDB",
        "id": "JVNDB-2021-004503",
        "ident": null
      },
      {
        "date": "2021-02-26T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-202102-1752",
        "ident": null
      },
      {
        "date": "2021-03-05T20:15:12.660000",
        "db": "NVD",
        "id": "CVE-2021-27257",
        "ident": null
      }
    ]
  },
  "sources_update_date": {
    "_id": null,
    "data": [
      {
        "date": "2021-06-29T00:00:00",
        "db": "ZDI",
        "id": "ZDI-21-264",
        "ident": null
      },
      {
        "date": "2021-03-07T00:00:00",
        "db": "CNVD",
        "id": "CNVD-2021-14775",
        "ident": null
      },
      {
        "date": "2021-03-17T00:00:00",
        "db": "VULMON",
        "id": "CVE-2021-27257",
        "ident": null
      },
      {
        "date": "2021-11-24T03:20:00",
        "db": "JVNDB",
        "id": "JVNDB-2021-004503",
        "ident": null
      },
      {
        "date": "2021-03-19T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-202102-1752",
        "ident": null
      },
      {
        "date": "2024-11-21T05:57:42.320000",
        "db": "NVD",
        "id": "CVE-2021-27257",
        "ident": null
      }
    ]
  },
  "threat_type": {
    "_id": null,
    "data": "remote or local",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202102-1752"
      }
    ],
    "trust": 0.6
  },
  "title": {
    "_id": null,
    "data": "NETGEAR\u00a0R7800\u00a0 Firmware validation vulnerability",
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2021-004503"
      }
    ],
    "trust": 0.8
  },
  "type": {
    "_id": null,
    "data": "trust management problem",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202102-1752"
      }
    ],
    "trust": 0.6
  }
}

CVE-2021-27257 (GCVE-0-2021-27257)

Vulnerability from cvelistv5

Published

2021-03-05 20:00

Modified

2024-08-03 20:48

Severity ?

6.5 (Medium) - CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CWE

CWE-295 - Improper Certificate Validation

Summary

References

▼	URL	Tags
	https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders	x_refsource_MISC
	https://www.zerodayinitiative.com/advisories/ZDI-21-264/	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	NETGEAR	R7800	Version: firmware version 1.0.2.76

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:48:15.995Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-264/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "R7800",
          "vendor": "NETGEAR",
          "versions": [
            {
              "status": "affected",
              "version": "firmware version 1.0.2.76"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "botto"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-05T20:00:26",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-264/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "zdi-disclosures@trendmicro.com",
          "ID": "CVE-2021-27257",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "R7800",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "firmware version 1.0.2.76"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "NETGEAR"
              }
            ]
          }
        },
        "credit": "botto",
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362."
            }
          ]
        },
        "impact": {
          "cvss": {
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-295: Improper Certificate Validation"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders",
              "refsource": "MISC",
              "url": "https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders"
            },
            {
              "name": "https://www.zerodayinitiative.com/advisories/ZDI-21-264/",
              "refsource": "MISC",
              "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-264/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2021-27257",
    "datePublished": "2021-03-05T20:00:26",
    "dateReserved": "2021-02-16T00:00:00",
    "dateUpdated": "2024-08-03T20:48:15.995Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted