ghsa-7r84-r685-grmg
Vulnerability from github
Published
2022-05-24 16:59
Modified
2022-06-03 00:01
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).

Show details on source website


{
   affected: [],
   aliases: [
      "CVE-2019-18277",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-444",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2019-10-23T14:15:00Z",
      severity: "HIGH",
   },
   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: "GHSA-7r84-r685-grmg",
   modified: "2022-06-03T00:01:41Z",
   published: "2022-05-24T16:59:39Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2019-18277",
      },
      {
         type: "WEB",
         url: "https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=196a7df44d8129d1adc795da020b722614d6a581",
      },
      {
         type: "WEB",
         url: "https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html",
      },
      {
         type: "WEB",
         url: "https://nathandavison.com/blog/haproxy-http-request-smuggling",
      },
      {
         type: "WEB",
         url: "https://usn.ubuntu.com/4174-1",
      },
      {
         type: "WEB",
         url: "https://www.mail-archive.com/haproxy@formilux.org/msg34926.html",
      },
      {
         type: "WEB",
         url: "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00016.html",
      },
      {
         type: "WEB",
         url: "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00019.html",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
         type: "CVSS_V3",
      },
   ],
}


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