Keycloak: open redirect via "form_post.jwt" jarm response mode
CVE-2023-6927

4.6MEDIUM

Key Information:

Vendor
Red Hat
Status
Red Hat Build Of Keycloak 22
Red Hat Build Of Keycloak 22.0.8
Red Hat Single Sign-on 7.0
Red Hat Single Sign-on 7.6 For Rhel 7
Vendor
CVE Published:
18 December 2023

Summary

A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.

Affected Version(s)

Red Hat build of Keycloak 22 22-7

References

https://access.redhat.com/errata/RHSA-2024:0094
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0095
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0096
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
4.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database

Credit

Red Hat would like to thank Pontus Hanssen ([email protected]) for reporting this issue.
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