Bug 1540040 (CVE-2017-18076)

Summary:	CVE-2017-18076 rubygem-omniauth: Improper protection of authenticity_token in strategy.rb via POST parameters
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	axilleas, jaruga
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	rubygem-omniauth 1.3.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:38:46 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:	1540041
Bug Blocks:

Description Sam Fowler 2018-01-30 07:01:20 UTC

In strategy.rb in OmniAuth before 1.3.2, the authenticity_token value is improperly protected because POST (in addition to GET) parameters are stored in the session and become available in the environment of the callback phase.

External References:
https://nvd.nist.gov/vuln/detail/CVE-2017-18076

Upstream Issue:
https://github.com/omniauth/omniauth/pull/867

Upstream Patch:
https://github.com/omniauth/omniauth/pull/867/commits/71866c5264122e196847a3980c43051446a03e9b

Comment 1 Sam Fowler 2018-01-30 07:01:41 UTC

Created rubygem-omniauth tracking bugs for this issue:

Affects: fedora-all [bug 1540041]

Comment 2 Product Security DevOps Team 2019-06-08 03:38:46 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.