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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
References
Show details on NVD website
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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
                  },
                  {
                    "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"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
                    "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"
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          {
            "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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              "Third Party Advisory"
            ],
            "url": "https://seclists.org/bugtraq/2019/Aug/31"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2019/dsa-4503"
          },
          {
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html"
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          {
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html"
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          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html"
          },
          {
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html"
          },
          {
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://access.redhat.com/errata/RHSA-2019:3433"
          },
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            "tags": [
              "Exploit",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/golang/go/issues/29098"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://groups.google.com/forum/#%21topic/golang-announce/0uuMm1BwpHE"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "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/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://seclists.org/bugtraq/2019/Aug/31"
          },
          {
            "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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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.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.