Bug 1564940 (CVE-2018-1000164)

Summary:	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
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	apevec, chrisw, extras-orphan, jjoyce, jschluet, lhh, lpeer, markmc, mburns, rbryant, sclewis, sisharma, slinaber, tdecacqu
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-21 19:59:53 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1564941, 1567003
Bug Blocks:	1564943

Description Sam Fowler 2018-04-09 01:33:28 UTC

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 2018-04-09 01:33:59 UTC

Created python-gunicorn tracking bugs for this issue:

Affects: epel-6 [bug 1564941]

Comment 2 Joshua Padman 2018-04-09 06:07:06 UTC

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