gsd-2019-18277
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A flaw was found in HAProxy before 2.0.6. In legacy mode, messages featuring a transfer-encoding header missing the "chunked" value were not being correctly rejected. The impact was limited but if combined with the "http-reuse always" setting, it could be used to help construct an HTTP request smuggling attack against a vulnerable component employing a lenient parser that would ignore the content-length header as soon as it saw a transfer-encoding one (even if not entirely valid according to the specification).
Aliases
Aliases
CVE-2019-18277


To clipboard 

{
  "GSD": {
    "alias": "CVE-2019-18277",
    "description": "A flaw was found in HAProxy before 2.0.6. In legacy mode, messages featuring a transfer-encoding header missing the \"chunked\" value were not being correctly rejected. The impact was limited but if combined with the \"http-reuse always\" setting, it could be used to help construct an HTTP request smuggling attack against a vulnerable component employing a lenient parser that would ignore the content-length header as soon as it saw a transfer-encoding one (even if not entirely valid according to the specification).",
    "id": "GSD-2019-18277",
    "references": [
      "https://www.suse.com/security/cve/CVE-2019-18277.html",
      "https://access.redhat.com/errata/RHSA-2020:2265",
      "https://access.redhat.com/errata/RHSA-2020:1936",
      "https://access.redhat.com/errata/RHSA-2020:1725",
      "https://access.redhat.com/errata/RHSA-2020:1287",
      "https://ubuntu.com/security/CVE-2019-18277",
      "https://linux.oracle.com/cve/CVE-2019-18277.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-18277"
      ],
      "details": "A flaw was found in HAProxy before 2.0.6. In legacy mode, messages featuring a transfer-encoding header missing the \"chunked\" value were not being correctly rejected. The impact was limited but if combined with the \"http-reuse always\" setting, it could be used to help construct an HTTP request smuggling attack against a vulnerable component employing a lenient parser that would ignore the content-length header as soon as it saw a transfer-encoding one (even if not entirely valid according to the specification).",
      "id": "GSD-2019-18277",
      "modified": "2023-12-13T01:23:50.096032Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2019-18277",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
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                    "version": {
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          }
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://www.mail-archive.com/haproxy@formilux.org/msg34926.html",
            "refsource": "MISC",
            "url": "https://www.mail-archive.com/haproxy@formilux.org/msg34926.html"
          },
          {
            "name": "https://nathandavison.com/blog/haproxy-http-request-smuggling",
            "refsource": "MISC",
            "url": "https://nathandavison.com/blog/haproxy-http-request-smuggling"
          },
          {
            "name": "https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=196a7df44d8129d1adc795da020b722614d6a581",
            "refsource": "MISC",
            "url": "https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=196a7df44d8129d1adc795da020b722614d6a581"
          },
          {
            "name": "USN-4174-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/4174-1/"
          },
          {
            "name": "openSUSE-SU-2019:2626",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00016.html"
          },
          {
            "name": "openSUSE-SU-2019:2645",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00019.html"
          },
          {
            "name": "[debian-lts-announce] 20220530 [SECURITY] [DLA 3034-1] haproxy security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
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        "nodes": [
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            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.0.6",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
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          "ID": "CVE-2019-18277"
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        "description": {
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            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-444"
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              ]
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=196a7df44d8129d1adc795da020b722614d6a581",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=196a7df44d8129d1adc795da020b722614d6a581"
            },
            {
              "name": "https://www.mail-archive.com/haproxy@formilux.org/msg34926.html",
              "refsource": "MISC",
              "tags": [
                "Release Notes"
              ],
              "url": "https://www.mail-archive.com/haproxy@formilux.org/msg34926.html"
            },
            {
              "name": "https://nathandavison.com/blog/haproxy-http-request-smuggling",
              "refsource": "MISC",
              "tags": [
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                "Third Party Advisory"
              ],
              "url": "https://nathandavison.com/blog/haproxy-http-request-smuggling"
            },
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              "url": "https://usn.ubuntu.com/4174-1/"
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            },
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              "tags": [],
              "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-06-02T14:15Z",
      "publishedDate": "2019-10-23T14:15Z"
    }
  }
}


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