Bug 1728609 (CVE-2019-10201) - CVE-2019-10201 keycloak: SAML broker does not check existence of signature on document allowing any user impersonation
Summary: CVE-2019-10201 keycloak: SAML broker does not check existence of signature on...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-10201
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1728611
TreeView+ depends on / blocked
 
Reported: 2019-07-10 09:13 UTC by Marian Rehak
Modified: 2021-02-16 21:43 UTC (History)
34 users (show)

Fixed In Version: keycloak 7.0.0
Doc Type: If docs needed, set a value
Doc Text:
It was found that Keycloak's SAML broker did not verify missing message signatures. If an attacker modifies the SAML Response and removes the <Signature> sections, the message is still accepted, and the message can be modified. An attacker could use this flaw to impersonate other users and gain access to sensitive information.
Clone Of:
Environment:
Last Closed: 2019-08-13 20:47:07 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:2483 0 None None None 2019-08-13 20:27:00 UTC
Red Hat Product Errata RHSA-2020:2067 0 None None None 2020-05-18 10:25:14 UTC
Red Hat Product Errata RHSA-2020:2366 0 None None None 2020-06-04 13:06:48 UTC

Description Marian Rehak 2019-07-10 09:13:26 UTC 
If an attacker modifies the SAML Response and removes the <Signature> Sections, the message is still accepted and the message can be modified, allowing the attacker to impersonate any user on the keycloak protected systems by modifying assertations.

Upstream Issue:

https://issues.jboss.org/browse/KEYCLOAK-10786
Comment 2 Chess Hazlett 2019-07-17 19:24:16 UTC 
Mitigation:

Administrator can prevent this issue for POST binding by requiring signed assertions.
Comment 4 Jason Shepherd 2019-08-12 02:25:33 UTC 
Red Hat Mobile Application Platform does not make use of SAML identity brokering.
Comment 9 errata-xmlrpc 2019-08-13 20:26:58 UTC 
This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.3.3 zip

Via RHSA-2019:2483 https://access.redhat.com/errata/RHSA-2019:2483
Comment 10 Product Security DevOps Team 2019-08-13 20:47:07 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-2019-10201
Comment 14 errata-xmlrpc 2020-05-18 10:25:09 UTC 
This issue has been addressed in the following products:

  Red Hat Openshift Application Runtimes

Via RHSA-2020:2067 https://access.redhat.com/errata/RHSA-2020:2067
Comment 15 errata-xmlrpc 2020-06-04 13:06:45 UTC 
This issue has been addressed in the following products:

  Red Hat Runtimes Spring Boot 2.1.12

Via RHSA-2020:2366 https://access.redhat.com/errata/RHSA-2020:2366
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