Bug 1425353 (CVE-2017-6062)

Summary:	CVE-2017-6062 mod_auth_openidc: OIDCUnAuthAction pass does not scrub request headers
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jdennis, jhrozek, jpazdziora, puiterwijk
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mod_auth_openidc 2.1.5	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-06-05 12:33:53 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:	1425356, 1626298
Bug Blocks:	1425355

Description Andrej Nemec 2017-02-21 09:31:40 UTC

It was found that when OIDCUnAuthAction is set to pass the OICD_CLAIM_* headers are not being scrubbed. This allows for unauthenticated requests to /content/.

Sending the OIDC_CLAIM_preferred_username header then allows to spoof any existing username. 

Upstream bug:

https://github.com/pingidentity/mod_auth_openidc/issues/222

Upstream patch:

https://github.com/pingidentity/mod_auth_openidc/commit/e81822a7d5f5bdf04ba03ca92680821893303850

Comment 1 Andrej Nemec 2017-02-21 09:34:06 UTC

Created mod_auth_openidc tracking bugs for this issue:

Affects: fedora-all [bug 1425356]

Comment 5 Jakub Hrozek 2019-01-17 10:33:28 UTC

At least as far as RHEL-7 goes, this CVE does not apply because the OIDCUnAuthAction doesn't work because of a mismatch of what the version of the module we ship sets as the REMOTE_USER and what httpd expects a valid value of REMOTE_USER should be. For more details, please see https://bugzilla.redhat.com/show_bug.cgi?id=1626298#c2 and https://bugzilla.redhat.com/show_bug.cgi?id=1626298#c3.

Therefore I'm going to close the RHEL-7 tracker as WONTFIX.