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: {
            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_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
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                  lang: "eng",
                  value: "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).",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "n/a",
                     },
                  ],
               },
            ],
         },
         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": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "2.0.6",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "cve@mitre.org",
               ID: "CVE-2019-18277",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "en",
                     value: "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).",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "en",
                           value: "CWE-444",
                        },
                     ],
                  },
               ],
            },
            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: [
                        "Exploit",
                        "Third Party Advisory",
                     ],
                     url: "https://nathandavison.com/blog/haproxy-http-request-smuggling",
                  },
                  {
                     name: "USN-4174-1",
                     refsource: "UBUNTU",
                     tags: [],
                     url: "https://usn.ubuntu.com/4174-1/",
                  },
                  {
                     name: "openSUSE-SU-2019:2626",
                     refsource: "SUSE",
                     tags: [],
                     url: "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00016.html",
                  },
                  {
                     name: "openSUSE-SU-2019:2645",
                     refsource: "SUSE",
                     tags: [],
                     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",
                     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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