CVE-2023-0657

Keycloak: impersonation via logout token exchange

Description

A flaw was found in Keycloak. This issue occurs due to improperly enforcing token types when validating signatures locally. This could allow an authenticated attacker to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.

Category

3.4
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 22.0.10
Affected: Red Hat Red Hat Single Sign-On 7
Published at:
Updated at:

References

Link Tags
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-2023-0657 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2166728 issue tracking

Frequently Asked Questions

What is the severity of CVE-2023-0657?
CVE-2023-0657 has been scored as a low severity vulnerability.
How to fix CVE-2023-0657?
To fix CVE-2023-0657, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-0657 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-0657 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-0657?
CVE-2023-0657 affects Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 22.0.10, Red Hat Red Hat Single Sign-On 7.
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