CVE-2023-6787

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2024:1867	Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:1868	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2023-6787	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254375	Issue Tracking Vendor Advisory
https://github.com/keycloak/keycloak/security/advisories/GHSA-c9h6-v78w-52wj	Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:1867	Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:1868	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2023-6787	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254375	Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:redhat:build_of_keycloak:-::::text-only:::
	cpe:2.3:a:redhat:keycloak::::::::
	cpe:2.3:a:redhat:keycloak::::::::

History

No history.

Information

Published : 2024-04-25 16:15

Updated : 2025-06-30 13:49

NVD link : CVE-2023-6787

Mitre link : CVE-2023-6787

CVE.ORG link : CVE-2023-6787

JSON object : View

Products Affected

redhat

keycloak
build_of_keycloak

CWE

CWE-287

Improper Authentication

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