Bug 2254375 (CVE-2023-6787)

Summary:	CVE-2023-6787 keycloak: session hijacking via re-authentication
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	boliveir, chazlett, dpalmer, drichtar, mulliken, pdrozd, peholase, pjindal, pskopek, rowaters, security-response-team, sthorger, thomas.kriener
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Keycloak that occurs from an error in the re-authentication mechanism within org.keycloak.authentication. This flaw allows hijacking an active Keycloak session by triggering a new authentication process with the query parameter "prompt=login," prompting the user to re-enter their credentials. If the user cancels this re-authentication by selecting "Restart login," an account takeover may occur, as the new session, with a different SUB, will possess the same SID as the previous session.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2242133

Description Mauro Matteo Cascella 2023-12-13 16:14:01 UTC

A flaw was found in Keycloak. An active keycloak session can be hijacked by initiating a new authentication (having the query parameter `prompt=login`) and forcing the user to enter his credentials once again. If the user cancels this re-authentication by clicking `Restart login`, the account takeover could take place as the new session, with a different SUB, will have the same SID as the previous session.

Comment 4 errata-xmlrpc 2024-04-16 20:26:31 UTC

This issue has been addressed in the following products:

  Red Hat build of Keycloak 22.0.10

Via RHSA-2024:1868 https://access.redhat.com/errata/RHSA-2024:1868

Comment 5 errata-xmlrpc 2024-04-16 20:26:54 UTC

This issue has been addressed in the following products:

  Red Hat build of Keycloak 22

Via RHSA-2024:1867 https://access.redhat.com/errata/RHSA-2024:1867