Bug 1836786 (CVE-2020-10748)

Summary: CVE-2020-10748 keycloak: top-level navigations to data URLs resulting in XSS are possible (incomplete fix of CVE-2020-1697)
Product: [Other] Security Response Reporter: Paramvir jindal <pjindal>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: aboyko, aileenc, akoufoud, alazarot, almorale, anstephe, avibelli, bgeorges, chazlett, cmoulliard, dkreling, drieden, etirelli, ggaughan, gmalinko, ibek, ikanello, janstey, jbalunas, jochrist, jpallich, jstastny, jwon, krathod, kverlaen, lthon, mnovotny, mszynkie, paradhya, pdrozd, pgallagh, pjindal, rrajasek, rruss, rsynek, sdaley, security-response-team, sthorger
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: RHSSO 7.4.1 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in Keycloak's data filter, where it allowed the processing of data URLs in some circumstances. This flaw allows an attacker to conduct cross-site scripting or further attacks.
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-07-02 13:27:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 1836784    

Description Paramvir jindal 2020-05-18 07:08:01 UTC
Insufficient filtering of Client baseUrl (follow-up to CVE-2020-1697)


Comment 5 Paramvir jindal 2020-05-19 11:13:36 UTC

Name: Lauritz Holtmann (Chair for Network and Data Security at Ruhr University Bochum)

Comment 8 errata-xmlrpc 2020-07-02 13:21:51 UTC
This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.4.1

Via RHSA-2020:2813 https://access.redhat.com/errata/RHSA-2020:2813

Comment 9 Product Security DevOps Team 2020-07-02 13:27:48 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):