CVE-2023-3597 Keycloak: secondary factor bypass in step-up authentication
Remote attackers can bypass step-up authentication by registering a false second factor, leading to unauthorized account access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-3597?
CVE-2023-3597 is a medium-severity authentication bypass vulnerability in Red Hat RHSSO 7.6.8, published on 25 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2023-3597?
4 open source packages ship an affected version, including org.keycloak:keycloak-services.
| Package | Affected | Fixed in |
|---|---|---|
org.keycloak:keycloak-services Maven | All versions | 22.0.10 |
org.keycloak:keycloak-services Maven | All versions | 22.0.10 |
org.keycloak:keycloak-services Maven | From 23.0.0 | 24.0.3 |
org.keycloak:keycloak-services Maven | From 23.0.0 | 24.0.3 |
How do I fix CVE-2023-3597?
Upgrade org.keycloak:keycloak-services to a fixed version for your release line: 22.0.10 or 24.0.3.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-3597 being exploited?
There is no known exploitation of CVE-2023-3597 in the wild and no public exploit code.
Sources
Also known as GHSA-4f53-xh3v-g8x4.