cve-2020-15586
Vulnerability from cvelistv5
Published
2020-07-17 15:38
Modified
2024-08-04 13:22
Severity ?
Summary
Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as demonstrated by the httputil.ReverseProxy Handler, because it reads a request body and writes a response at the same time.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00077.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00082.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00029.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00030.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://groups.google.com/forum/#%21topic/golang-announce/XZNfaiwgt2w
cve@mitre.orghttps://groups.google.com/forum/#%21topic/golang-announce/f2c5bqrGH_g
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2020/11/msg00037.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2020/11/msg00038.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OCR6LAKCVKL55KJQPPBBWVQGOP7RL2RW/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WIRVUHD7TJIT7JJ33FKHIVTHPYABYPHR/
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20200731-0005/Third Party Advisory
cve@mitre.orghttps://www.cloudfoundry.org/blog/cve-2020-15586/Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2021/dsa-4848Third Party Advisory
cve@mitre.orghttps://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T13:22:29.273Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "openSUSE-SU-2020:1087",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00077.html"
          },
          {
            "name": "openSUSE-SU-2020:1095",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00082.html"
          },
          {
            "name": "FEDORA-2020-d75360e2b0",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OCR6LAKCVKL55KJQPPBBWVQGOP7RL2RW/"
          },
          {
            "name": "FEDORA-2020-9cd1204ba0",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WIRVUHD7TJIT7JJ33FKHIVTHPYABYPHR/"
          },
          {
            "name": "openSUSE-SU-2020:1405",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00029.html"
          },
          {
            "name": "openSUSE-SU-2020:1407",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00030.html"
          },
          {
            "name": "[debian-lts-announce] 20201121 [SECURITY] [DLA 2459-1] golang-1.7 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00037.html"
          },
          {
            "name": "[debian-lts-announce] 20201121 [SECURITY] [DLA 2460-1] golang-1.8 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00038.html"
          },
          {
            "name": "DSA-4848",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4848"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://groups.google.com/forum/#%21topic/golang-announce/XZNfaiwgt2w"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200731-0005/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://groups.google.com/forum/#%21topic/golang-announce/f2c5bqrGH_g"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.cloudfoundry.org/blog/cve-2020-15586/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as demonstrated by the httputil.ReverseProxy Handler, because it reads a request body and writes a response at the same time."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-06-14T17:20:17",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "openSUSE-SU-2020:1087",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00077.html"
        },
        {
          "name": "openSUSE-SU-2020:1095",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00082.html"
        },
        {
          "name": "FEDORA-2020-d75360e2b0",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OCR6LAKCVKL55KJQPPBBWVQGOP7RL2RW/"
        },
        {
          "name": "FEDORA-2020-9cd1204ba0",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WIRVUHD7TJIT7JJ33FKHIVTHPYABYPHR/"
        },
        {
          "name": "openSUSE-SU-2020:1405",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00029.html"
        },
        {
          "name": "openSUSE-SU-2020:1407",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00030.html"
        },
        {
          "name": "[debian-lts-announce] 20201121 [SECURITY] [DLA 2459-1] golang-1.7 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00037.html"
        },
        {
          "name": "[debian-lts-announce] 20201121 [SECURITY] [DLA 2460-1] golang-1.8 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00038.html"
        },
        {
          "name": "DSA-4848",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4848"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://groups.google.com/forum/#%21topic/golang-announce/XZNfaiwgt2w"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200731-0005/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://groups.google.com/forum/#%21topic/golang-announce/f2c5bqrGH_g"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.cloudfoundry.org/blog/cve-2020-15586/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-15586",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as demonstrated by the httputil.ReverseProxy Handler, because it reads a request body and writes a response at the same time."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "openSUSE-SU-2020:1087",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00077.html"
            },
            {
              "name": "openSUSE-SU-2020:1095",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00082.html"
            },
            {
              "name": "FEDORA-2020-d75360e2b0",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OCR6LAKCVKL55KJQPPBBWVQGOP7RL2RW/"
            },
            {
              "name": "FEDORA-2020-9cd1204ba0",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WIRVUHD7TJIT7JJ33FKHIVTHPYABYPHR/"
            },
            {
              "name": "openSUSE-SU-2020:1405",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00029.html"
            },
            {
              "name": "openSUSE-SU-2020:1407",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00030.html"
            },
            {
              "name": "[debian-lts-announce] 20201121 [SECURITY] [DLA 2459-1] golang-1.7 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00037.html"
            },
            {
              "name": "[debian-lts-announce] 20201121 [SECURITY] [DLA 2460-1] golang-1.8 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00038.html"
            },
            {
              "name": "DSA-4848",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2021/dsa-4848"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuApr2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
            },
            {
              "name": "https://groups.google.com/forum/#!topic/golang-announce/XZNfaiwgt2w",
              "refsource": "CONFIRM",
              "url": "https://groups.google.com/forum/#!topic/golang-announce/XZNfaiwgt2w"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200731-0005/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200731-0005/"
            },
            {
              "name": "https://groups.google.com/forum/#!topic/golang-announce/f2c5bqrGH_g",
              "refsource": "MISC",
              "url": "https://groups.google.com/forum/#!topic/golang-announce/f2c5bqrGH_g"
            },
            {
              "name": "https://www.cloudfoundry.org/blog/cve-2020-15586/",
              "refsource": "CONFIRM",
              "url": "https://www.cloudfoundry.org/blog/cve-2020-15586/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-15586",
    "datePublished": "2020-07-17T15:38:24",
    "dateReserved": "2020-07-07T00:00:00",
    "dateUpdated": "2024-08-04T13:22:29.273Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-15586\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-07-17T16:15:11.480\",\"lastModified\":\"2023-11-07T03:17:41.413\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as demonstrated by the httputil.ReverseProxy Handler, because it reads a request body and writes a response at the same time.\"},{\"lang\":\"es\",\"value\":\"Go versiones anteriores a 1.13.13 y versiones 1.14.x anteriores a 1.14.5, presenta una carrera de datos en algunos servidores net/http, como es demostrado por el Manejador httputil.ReverseProxy, porque lee un cuerpo de petici\u00f3n y escribe una respuesta al mismo tiempo\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:N/A:P\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\",\"baseScore\":4.3},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.13.13\",\"matchCriteriaId\":\"CF900B29-8A1F-4517-A24F-1E154DBEB3FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.14.0\",\"versionEndExcluding\":\"1.14.5\",\"matchCriteriaId\":\"2B1FE085-DCB4-4BCC-86A7-A6DA83AA8ABC\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"13.7.0\",\"matchCriteriaId\":\"8DA59AA0-F83D-44F1-BEEB-9E5D2CF70D2E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cloudfoundry:routing-release:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"0.203.0\",\"matchCriteriaId\":\"2F7677BE-5DFB-48EB-8FCB-AC6A0D983F5E\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B620311B-34A3-48A6-82DF-6F078D7A4493\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B009C22E-30A4-4288-BCF6-C3E81DEAF45A\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"80F0FA5D-8D3B-4C0E-81E2-87998286AF33\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"36D96259-24BD-44E2-96D9-78CE1D41F956\"}]}]}],\"references\":[{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00077.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00082.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00029.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00030.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://groups.google.com/forum/#%21topic/golang-announce/XZNfaiwgt2w\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://groups.google.com/forum/#%21topic/golang-announce/f2c5bqrGH_g\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2020/11/msg00037.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2020/11/msg00038.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OCR6LAKCVKL55KJQPPBBWVQGOP7RL2RW/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WIRVUHD7TJIT7JJ33FKHIVTHPYABYPHR/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20200731-0005/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.cloudfoundry.org/blog/cve-2020-15586/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2021/dsa-4848\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuApr2021.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.