CVE-2019-14809 (GCVE-0-2019-14809)

Vulnerability from cvelistv5 – Published: 2019-08-13 20:54 – Updated: 2024-08-05 00:26
VLAI
Summary
net/url in Go before 1.11.13 and 1.12.x before 1.12.8 mishandles malformed hosts in URLs, leading to an authorization bypass in some applications. This is related to a Host field with a suffix appearing in neither Hostname() nor Port(), and is related to a non-numeric port number. For example, an attacker can compose a crafted javascript:// URL that results in a hostname of google.com.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 27/100 over 2308 records in the last 180 days details
References
Show details on NVD website
To clipboard 

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          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://www.debian.org/security/2019/dsa-4503"
        }
      ],
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "NVD-CWE-noinfo"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-17T01:53:01.000Z",
      "cve": "CVE-2019-14809",
      "id": "msrc_CVE-2019-14809",
      "initial_release_date": "2025-09-03T20:50:09.000Z",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "4",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net/url in Go before 1.11.13 and 1.12.x before 1.12.8 mishandles malformed hosts in URLs, leading to an authorization bypass in some applications. This is related to a Host field with a suffix appearing in neither Hostname() nor Port(), and is related to a non-numeric port number. For example, an attacker can compose a crafted javascript:// URL that results in a hostname of google.com.",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2019-14809.json",
      "version": "6"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BBD0F192-5A67-48E9-9C1E-4A23148A3837",
                    "versionEndExcluding": "1.11.13",
                    "vulnerable": true
                  },
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                    "criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "AFE73A16-798B-477F-923E-E0F9A4BE63F5",
                    "versionEndExcluding": "1.12.8",
                    "versionStartIncluding": "1.12.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
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              {
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                    "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
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                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "net/url in Go before 1.11.13 and 1.12.x before 1.12.8 mishandles malformed hosts in URLs, leading to an authorization bypass in some applications. This is related to a Host field with a suffix appearing in neither Hostname() nor Port(), and is related to a non-numeric port number. For example, an attacker can compose a crafted javascript:// URL that results in a hostname of google.com."
          },
          {
            "lang": "es",
            "value": "net / url in Go antes del 1.11.13 y 1.12.x antes del 1.12.8 maneja mal los hosts mal formados en las URL, lo que lleva a una omisi\u00f3n de autorizaci\u00f3n en algunas aplicaciones. Esto est\u00e1 relacionado con un campo Host con un sufijo que no aparece en Hostname () ni Port (), y est\u00e1 relacionado con un n\u00famero de puerto no num\u00e9rico. Por ejemplo, un atacante puede componer un javascript creado: // URL que da como resultado un nombre de host de google.com."
          }
        ],
        "id": "CVE-2019-14809",
        "lastModified": "2024-11-21T04:27:24.180",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "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,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2019-08-13T21:15:11.427",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://access.redhat.com/errata/RHSA-2019:3433"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/golang/go/issues/29098"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://groups.google.com/forum/#%21topic/golang-announce/0uuMm1BwpHE"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://groups.google.com/forum/#%21topic/golang-announce/65QixT3tcmg"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
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            "url": "https://seclists.org/bugtraq/2019/Aug/31"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
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            "url": "https://www.debian.org/security/2019/dsa-4503"
          },
          {
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          },
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            "url": "https://access.redhat.com/errata/RHSA-2019:3433"
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            "url": "https://github.com/golang/go/issues/29098"
          },
          {
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          {
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/"
          },
          {
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2019/dsa-4503"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:43:36+00:00",
      "cve": "CVE-2019-14809",
      "id": "CVE-2019-14809",
      "initial_release_date": "2019-08-13T00:00:00+00:00",
      "product_status:fixed": "59",
      "product_status:known_affected": "22",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "golang: malformed hosts in URLs leads to authorization bypass",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-14809.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-08-07T23:39:16Z",
      "cve": "CVE-2019-14809",
      "id": "CVE-2019-14809",
      "initial_release_date": "2023-02-15T04:09:32Z",
      "product_status:recommended": "74",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-14809",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-14809.json",
      "version": "12"
    }
  }
}



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