Improper Verification of Cryptographic Signature in keycloak
Moderate severity
GitHub Reviewed
Published
Sep 23, 2019
to the GitHub Advisory Database
•
Updated Feb 1, 2023
Description
Published by the National Vulnerability Database
Aug 14, 2019
Reviewed
Sep 19, 2019
Published to the GitHub Advisory Database
Sep 23, 2019
Last updated
Feb 1, 2023
It was found that Keycloak's SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the sections, the message is still accepted, and the message can be modified. An attacker could use this flaw to impersonate other users and gain access to sensitive information.
References