9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2019-14910

CVE-2019-14910: Keycloak Authentication Error

A vulnerability was found in keycloak 7.x, when keycloak is configured with LDAP user federation and StartTLS is used instead of SSL/TLS from the LDAP server (ldaps), in this case user authentication succeeds even if invalid password has entered.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2019-14910

CVE-2019-14910:

9.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.keycloak:keycloak-parent	maven	>= 7.0.0, <= 7.0.1

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability arises from improper handling of StartTLS in LDAP authentication. Keycloak's LDAP connection setup (LDAPUtils.createLDAPConnection) likely fails to enforce proper certificate validation or error handling during StartTLS negotiation, leaving the connection in an insecure state. The password validation function (LDAPIdentityStore.validatePassword) then proceeds with authentication without verifying the TLS-secured bind operation's success. This combination allows invalid passwords to be accepted when StartTLS is misconfigured. The CWEs (278, 295) and symptom description align with these functions' responsibilities in secure connection handling and authentication checks.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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