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PYSEC-2018-55

Quick fix

PYSEC-2018-55 — gunicorn: upgrade to the fixed version with the command below.

pip install --upgrade 'gunicorn>=19.5.0'

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/gunicorn

Introduced in: 0Fixed in: 19.5.0

Fixpip install --upgrade 'gunicorn>=19.5.0'

References

https://github.com/benoitc/gunicorn/issues/1227[REPORT]
https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5[WEB]
https://lists.debian.org/debian-lts-announce/2018/04/msg00022.html[WEB]
https://www.debian.org/security/2018/dsa-4186[ADVISORY]
https://usn.ubuntu.com/4022-1/[WEB]
https://github.com/advisories/GHSA-32pc-xphx-q4f6[ADVISORY]