CVE-2024-8698 Information

Description

A flaw exists in the SAML signature validation method within the Keycloak XMLSignatureUtil class. The method incorrectly determines whether a SAML signature is for the full document or only for specific assertions based on the position of the signature in the XML document rather than the Reference element used to specify the signed element. This flaw allows attackers to create crafted responses that can bypass the validation potentially leading to privilege escalation or impersonation attacks.

CVSS Vector

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

Reference

https://access.redhat.com/security/cve/CVE-2024-8698 https://bugzilla.redhat.com/show_bug.cgi?id=2311641 https://github.com/keycloak/keycloak/blob/main/saml-core/src/main/java/org/keycloak/saml/processing/core/util/XMLSignatureUtil.java#L415 https://access.redhat.com/errata/RHSA-2024:6878 https://access.redhat.com/errata/RHSA-2024:6879 https://access.redhat.com/errata/RHSA-2024:6880 https://access.redhat.com/errata/RHSA-2024:6882 https://access.redhat.com/errata/RHSA-2024:6886 https://access.redhat.com/errata/RHSA-2024:6887 https://access.redhat.com/errata/RHSA-2024:6888 https://access.redhat.com/errata/RHSA-2024:6889 https://access.redhat.com/errata/RHSA-2024:6890

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

LOW

Base Score

LOW

Base Severity

7.7