gsd-2019-18802
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat "header-value " as a different string from "header-value" so for example with the Host header "example.com " one could bypass "example.com" matchers.
Aliases
Aliases
CVE-2019-18802


To clipboard 

{
  "GSD": {
    "alias": "CVE-2019-18802",
    "description": "An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat \"header-value \" as a different string from \"header-value\" so for example with the Host header \"example.com \" one could bypass \"example.com\" matchers.",
    "id": "GSD-2019-18802",
    "references": [
      "https://www.suse.com/security/cve/CVE-2019-18802.html",
      "https://access.redhat.com/errata/RHSA-2019:4222",
      "https://advisories.mageia.org/CVE-2019-18802.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-18802"
      ],
      "details": "An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat \"header-value \" as a different string from \"header-value\" so for example with the Host header \"example.com \" one could bypass \"example.com\" matchers.",
      "id": "GSD-2019-18802",
      "modified": "2023-12-13T01:23:50.502058Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2019-18802",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
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            "lang": "eng",
            "value": "An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat \"header-value \" as a different string from \"header-value\" so for example with the Host header \"example.com \" one could bypass \"example.com\" matchers."
          }
        ]
      },
      "problemtype": {
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                "value": "n/a"
              }
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/envoyproxy/envoy/commits/master",
            "refsource": "MISC",
            "url": "https://github.com/envoyproxy/envoy/commits/master"
          },
          {
            "name": "https://groups.google.com/forum/#!forum/envoy-users",
            "refsource": "MISC",
            "url": "https://groups.google.com/forum/#!forum/envoy-users"
          },
          {
            "name": "https://blog.envoyproxy.io",
            "refsource": "MISC",
            "url": "https://blog.envoyproxy.io"
          },
          {
            "name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4",
            "refsource": "MISC",
            "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4"
          },
          {
            "name": "openSUSE-SU-2020:0379",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "1.12.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-18802"
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        "description": {
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              "value": "An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat \"header-value \" as a different string from \"header-value\" so for example with the Host header \"example.com \" one could bypass \"example.com\" matchers."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "NVD-CWE-noinfo"
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/envoyproxy/envoy/commits/master",
              "refsource": "MISC",
              "tags": [
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              "url": "https://github.com/envoyproxy/envoy/commits/master"
            },
            {
              "name": "https://blog.envoyproxy.io",
              "refsource": "MISC",
              "tags": [
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              ],
              "url": "https://blog.envoyproxy.io"
            },
            {
              "name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4"
            },
            {
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            },
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              "tags": [],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html"
            }
          ]
        }
      },
      "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": "2020-08-24T17:37Z",
      "publishedDate": "2019-12-13T13:15Z"
    }
  }
}


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