Bug 1552861 (CVE-2017-18122)

Summary:	CVE-2017-18122 php-simplesamlphp-saml2: weak authentication in SAML implementation
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	lpardo, shawn
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:	2018-04-23 14:00:45 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:	1552864, 1552865
Bug Blocks:

Description Laura Pardo 2018-03-07 21:05:56 UTC

The (deprecated) SAML 1.1 implementation would regard as valid any unsigned SAML response containing more than one signed assertion, provided that the signature of at least one of the assertions was valid, allowing an attacker that could obtain a valid signed assertion from an IdP to impersonate users from that IdP.

Comment 1 Laura Pardo 2018-03-07 21:06:05 UTC

External References:

https://simplesamlphp.org/security/201710-01

Comment 2 Laura Pardo 2018-03-07 21:06:25 UTC

Created php-simplesamlphp-saml2 tracking bugs for this issue:

Affects: fedora-all [bug 1552865]
Affects: epel-all [bug 1552864]

Comment 3 Shawn Iwinski 2018-03-07 21:19:34 UTC

CVE-2017-18122 (SSPSA 201710-01) is for the SimpleSAMLphp application not the php-simplesamlphp/saml2 library

Dependent bugs have been closed as not a bug.  Please close this bug as well.

Comment 4 Shawn Iwinski 2018-04-23 04:36:25 UTC

All dependent bugs are closed.  Please close.