CVE-2023-3597
Keycloak: secondary factor bypass in step-up authentication
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A flaw was found in Keycloak, where it does not correctly validate its client step-up authentication in org.keycloak.authentication. This flaw allows a remote user authenticated with a password to register a false second authentication factor along with an existing one and bypass authentication.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium5.0 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |
| NVDNVD · Deferred | 3.1 | Medium5.0 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 0.60% · top 51% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
keycloak
- affected < 22.0.10
- affected 23.0.0 – < 24.0.3
Red Hat · Red Hat build of Keycloak 22
- unaffected 22.0.10-1 – < *
Red Hat · Red Hat build of Keycloak 22
- unaffected 22-13 – < *
Red Hat · Red Hat build of Keycloak 22
- unaffected 22-16 – < *
Red Hat · Red Hat build of Keycloak 22.0.10
All versions: unaffected
All versions: unaffected
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.keycloak:keycloak-servicesGHSA-4f53-xh3v-g8x4 (opens in a new tab)
References (5)
- RHSA-2024:1866 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2024:1867 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:1868 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://access.redhat.com/security/cve/CVE-2023-3597 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2221760 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-4f53-xh3v-g8x4 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-3597)Record last updated .