Bug 1564940 – CVE-2018-1000164 python-gunicorn: Improper neutralization of CRLF Sequences http/wsgi.py:process_headers() can allow an attacker to cause a server to return arbitrary HTTP headers

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Bug 1564940 - (CVE-2018-1000164) CVE-2018-1000164 python-gunicorn: Improper neutralization of CRLF Sequences http/wsgi.py:process_headers() can allow an attacker to cause a server to return arbitrary HTTP headers

Summary:	CVE-2018-1000164 python-gunicorn: Improper neutralization of CRLF Sequences h...

Status:	NEW

Aliases:	CVE-2018-1000164

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=moderate,public=20160317,repor...
Keywords:	Security

Depends On:	1567003 1564941
Blocks:	1564943
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Reported:	2018-04-08 21:33 EDT by Sam Fowler
Modified:	2018-04-16 10:03 EDT (History)
CC List:	18 users (show)

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Description Sam Fowler 2018-04-08 21:33:28 EDT

python-gunicorn before version 19.5.0 has a HTTP response splitting vulnerability in the http/wsgi.py:process_headers() function caused by the improper neutralization of CRLF sequences. An attacker could exploit this to cause a server to return arbitrary HTTP headers.


External References:

https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5


Upstream Issue:

https://github.com/benoitc/gunicorn/issues/1227


Upstream Patch:

https://github.com/benoitc/gunicorn/commit/5263a4ef2a63c62216680876f3813959839608ff

Comment 1 Sam Fowler 2018-04-08 21:33:59 EDT

Created python-gunicorn tracking bugs for this issue:

Affects: epel-6 [bug 1564941]

Comment 2 Joshua Padman 2018-04-09 02:07:06 EDT

The version shipped with OpenStack 12 is 19.7.1 and contains the latest fixes.

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