Improper Certificate Validation

2023-06-0707:41:36

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

vulnerable

improper validation

certificate

keycloak

authentication bypass

reverse proxy

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS

0.001

Percentile

18.4%

JSON

org.keycloak:keycloak-services is vulnerable to Improper Certificate Validation. The flaw relies on enabling Revalidate Client Certificate and not validating the reverse proxy before Keycloak. An attacker is able to choose the server-validated certificate, resulting in authentication bypass.