Bug 1719501 (CVE-2019-12387)

Summary:	CVE-2019-12387 python-twisted: Improper neutralization of CRLF characters in URIs and HTTP methods
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bbuckingham, bcourt, bkearney, btotty, cstratak, dbecker, hhudgeon, jjoyce, jschluet, kbasil, lhh, lpeer, lzap, mburns, mhroncok, mhulan, mmccune, python-maint, python-sig, rchan, rhos-maint, rjerrido, sclewis, sisharma, slinaber, tvignaud, vbellur, zebob.m
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:	2020-03-31 22:34:22 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:	1719502, 1719503, 1721518, 1723274, 1729865, 1731292, 1731293, 1731294
Bug Blocks:	1719504

Description Pedro Sampaio 2019-06-12 00:14:40 UTC

In Twisted before 19.2.1, twisted.web did not validate or sanitize URIs or HTTP methods, allowing an attacker to inject invalid characters such as CRLF.

Upstream patch:

https://github.com/twisted/twisted/commit/6c61fc4503ae39ab8ecee52d10f10ee2c371d7e2

References:

https://github.com/twisted/twisted/commit/6c61fc4503ae39ab8ecee52d10f10ee2c371d7e2

Comment 1 Pedro Sampaio 2019-06-12 00:16:01 UTC

Created python-twisted tracking bugs for this issue:

Affects: fedora-all [bug 1719503]

Comment 14 errata-xmlrpc 2020-03-31 19:21:32 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:1091 https://access.redhat.com/errata/RHSA-2020:1091

Comment 15 Product Security DevOps Team 2020-03-31 22:34:22 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-12387

Comment 17 Nick Tait 2021-04-03 16:11:19 UTC

Statement:

* This issue does not affect Red Hat Gluster Storage 3 and Red Hat Ceph Storage 2 and 3 because these products do not use the twisted web APIs.
* This issue does affect Red Hat Enterprise Linux 6. However, because this version is now in Maintenance Support 2 Phase and the flaw has a security impact of Moderate,  it is not currently planned to be addressed in future Red Hat Enterprise Linux 6 updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata
* In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP python-twisted package.