GSD-2020-10887

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IPv6 connections. The issue results from the lack of proper filtering of IPv6 SSH connections. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9663.
Aliases
Aliases
CVE-2020-10887
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{
  "GSD": {
    "alias": "CVE-2020-10887",
    "description": "This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IPv6 connections. The issue results from the lack of proper filtering of IPv6 SSH connections. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9663.",
    "id": "GSD-2020-10887"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-10887"
      ],
      "details": "This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IPv6 connections. The issue results from the lack of proper filtering of IPv6 SSH connections. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9663.",
      "id": "GSD-2020-10887",
      "modified": "2023-12-13T01:22:04.272576Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ASSIGNER": "zdi-disclosures@trendmicro.com",
        "ID": "CVE-2020-10887",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Archer A7",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "Firmware Ver: 190726"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "TP-Link"
            }
          ]
        }
      },
      "credit": "F-Secure Labs - Mark Barnes, Toby Drew, Max Van Amerongen, and James Loureiro",
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "value": "This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IPv6 connections. The issue results from the lack of proper filtering of IPv6 SSH connections. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9663."
          }
        ]
      },
      "impact": {
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                "value": "CWE-693: Protection Mechanism Failure"
              }
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        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://www.zerodayinitiative.com/advisories/ZDI-20-338/",
            "refsource": "MISC",
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-20-338/"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
          {
            "children": [
              {
                "children": [],
                "cpe_match": [
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                    "cpe23Uri": "cpe:2.3:o:tp-link:ac1750_firmware:190726:*:*:*:*:*:*:*",
                    "cpe_name": [],
                    "vulnerable": true
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                "operator": "OR"
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                "cpe_match": [
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            "cpe_match": [],
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      },
      "cve": {
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          "ASSIGNER": "zdi-disclosures@trendmicro.com",
          "ID": "CVE-2020-10887"
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IPv6 connections. The issue results from the lack of proper filtering of IPv6 SSH connections. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9663."
            }
          ]
        },
        "problemtype": {
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                  "value": "NVD-CWE-Other"
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              "tags": [
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                "VDB Entry"
              ],
              "url": "https://www.zerodayinitiative.com/advisories/ZDI-20-338/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-10-26T20:03Z",
      "publishedDate": "2020-03-25T21:15Z"
    }
  }
}


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