id: PYSEC-2018-55
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.'
affected:
- package:
    name: gunicorn
    ecosystem: PyPI
    purl: pkg:pypi/gunicorn
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: '0'
    - fixed: 19.5.0
  versions:
  - '0.1'
  - 0.10.0
  - 0.10.1
  - 0.11.0
  - 0.11.1
  - 0.11.2
  - 0.12.0
  - 0.12.1
  - 0.12.2
  - 0.13.0
  - 0.13.1
  - 0.13.2
  - 0.13.3
  - 0.13.4
  - 0.14.0
  - 0.14.1
  - 0.14.2
  - 0.14.3
  - 0.14.4
  - 0.14.5
  - 0.14.6
  - 0.15.0
  - 0.16.0
  - 0.16.1
  - 0.17.0
  - 0.17.1
  - 0.17.2
  - 0.17.3
  - 0.17.4
  - '0.2'
  - 0.2.1
  - '0.3'
  - 0.3.1
  - 0.3.2
  - '0.4'
  - 0.4.1
  - 0.4.2
  - '0.5'
  - 0.5.1
  - '0.6'
  - 0.6.1
  - 0.6.2
  - 0.6.3
  - 0.6.4
  - 0.6.5
  - 0.6.6
  - 0.7.0
  - 0.7.1
  - 0.7.2
  - 0.8.0
  - 0.8.1
  - 0.9.0
  - 0.9.1
  - '17.5'
  - '18.0'
  - 19.0.0
  - 19.1.0
  - 19.1.1
  - 19.2.0
  - 19.2.1
  - 19.3.0
  - 19.4.0
  - 19.4.1
  - 19.4.2
  - 19.4.3
  - 19.4.4
  - 19.4.5
references:
- type: REPORT
  url: https://github.com/benoitc/gunicorn/issues/1227
- type: WEB
  url: https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5
- type: WEB
  url: https://lists.debian.org/debian-lts-announce/2018/04/msg00022.html
- type: ADVISORY
  url: https://www.debian.org/security/2018/dsa-4186
- type: WEB
  url: https://usn.ubuntu.com/4022-1/
- type: ADVISORY
  url: https://github.com/advisories/GHSA-32pc-xphx-q4f6
aliases:
- CVE-2018-1000164
- GHSA-32pc-xphx-q4f6
modified: '2021-07-15T02:22:14.592267Z'
published: '2018-04-18T19:29:00Z'