Bug 1646818 (CVE-2018-16471)

Summary:	CVE-2018-16471 rubygem-rack: Cross-site scripting (XSS) via `scheme` method on `Rack::Request`
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:	ahardin, apevec, bbuckingham, bcourt, bkearney, bleanhar, bmidwood, cbillett, ccoleman, chrisw, dajohnso, dclarizi, dedgar, dmetzger, eparis, gblomqui, gmccullo, gtanzill, hhorak, jaruga, jgoulding, jhardy, jjoyce, jokerman, jorton, jprause, jschluet, kdixon, lavenel, lhh, lpeer, markmc, mburns, mchappel, mmccune, mo, ohadlevy, rbryant, rchan, rjerrido, roliveri, ruby-maint, sclewis, simaishi, sisharma, slinaber, steve.traylen, strzibny, tdecacqu, tomckay, vondruch
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	rubygem-rack 2.0.6, rubygem-rack 1.6.11	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-25 22:21:23 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:	1646820, 1646819, 1654556, 1655633, 1655634, 1658572
Bug Blocks:	1646821

Description Sam Fowler 2018-11-06 04:38:16 UTC

Rack (rubygem-rack) versions before 2.0.6 are vulnerable to a cross-site scripting (XSS) flaw via the `scheme` method on `Rack::Request`.


External Reference:

https://groups.google.com/d/msg/rubyonrails-security/GKsAFT924Ag/DYtk-Xl6AAAJ

Comment 1 Sam Fowler 2018-11-06 04:39:10 UTC

Created rubygem-rack tracking bugs for this issue:

Affects: epel-all [bug 1646820]
Affects: fedora-all [bug 1646819]

Comment 3 James Hebden 2018-11-29 06:22:29 UTC

Red Hat OpenStack Platform and OpenShift Enterprise are not affected. Whilst the version of rack in use as a dependency in optional components is vulnerable, the vulnerable variable is not used in a way that could lead to XSS.

Comment 7 Riccardo Schirone 2018-12-12 12:25:27 UTC

Upstream patches:
- https://github.com/rack/rack/commit/313dd6a05a5924ed6c82072299c53fed09e39ae7 (for 2.0-stable branch)
- https://github.com/rack/rack/commit/97ca63d87d88b4088fb1995b14103d4fe6a5e594 (for 1.6-stable branch)

Comment 11 Richard Maciel Costa 2019-01-04 22:37:32 UTC

Statement:

Red Hat OpenStack Platform and OpenShift Enterprise are not affected. Whilst the version of rack in use as a dependency in optional components is vulnerable, the vulnerable variable is not used in a way that could lead to XSS.

Subscription Asset Manager is now in a reduced support phase receiving only Critical impact security fixes. This issue has been rated as having a security impact Moderate, and is not currently planned to be addressed in future updates.

Red Hat CloudForms and Satellite 6 are not affected. Whilst the version of rack in use as a dependency in optional components is vulnerable, the vulnerable variable is not used in a way that could lead to XSS.