ubuntu-cve-2018-1000164
Vulnerability from osv_ubuntu
Published
2018-04-18 00:00
Modified
2025-07-16 04:54
Summary
Details

gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in "process_headers" function in "gunicorn/http/wsgi.py" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.

Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gunicorn",
            "binary_version": "17.5-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "gunicorn",
        "purl": "pkg:deb/ubuntu/gunicorn@17.5-2ubuntu0.1~esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "17.5-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "17.5-2",
        "17.5-2build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gunicorn",
            "binary_version": "19.4.5-1ubuntu1.1"
          },
          {
            "binary_name": "gunicorn-examples",
            "binary_version": "19.4.5-1ubuntu1.1"
          },
          {
            "binary_name": "gunicorn3",
            "binary_version": "19.4.5-1ubuntu1.1"
          },
          {
            "binary_name": "python-gunicorn",
            "binary_version": "19.4.5-1ubuntu1.1"
          },
          {
            "binary_name": "python3-gunicorn",
            "binary_version": "19.4.5-1ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "gunicorn",
        "purl": "pkg:deb/ubuntu/gunicorn@19.4.5-1ubuntu1.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "19.4.5-1ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "19.0-8ubuntu1",
        "19.4.1-1ubuntu1",
        "19.4.5-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in \"process_headers\" function in \"gunicorn/http/wsgi.py\" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.",
  "id": "UBUNTU-CVE-2018-1000164",
  "modified": "2025-07-16T04:54:12Z",
  "published": "2018-04-18T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-1000164"
    },
    {
      "type": "REPORT",
      "url": "https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4022-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-1000164"
    }
  ],
  "related": [
    "USN-4022-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-1000164"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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