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Keycloak secondary factor bypass in step-up authentication

Moderate severity GitHub Reviewed Published Apr 17, 2024 in keycloak/keycloak • Updated Apr 25, 2024

Package

maven org.keycloak:keycloak-services (Maven)

Affected versions

< 22.0.10
>= 23.0.0, < 24.0.3

Patched versions

22.0.10
24.0.3

Description

Keycloak does not correctly validate its client step-up authentication. A password-authed attacker could use this flaw to register a false second auth factor, alongside the existing one, to a targeted account. The second factor then permits step-up authentication.

References

@abstractj abstractj published to keycloak/keycloak Apr 17, 2024
Published to the GitHub Advisory Database Apr 17, 2024
Reviewed Apr 17, 2024
Published by the National Vulnerability Database Apr 25, 2024
Last updated Apr 25, 2024

Severity

Moderate
5.0
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Weaknesses

CVE ID

CVE-2023-3597

GHSA ID

GHSA-4f53-xh3v-g8x4

Source code

Credits

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