CVE-2024-8698

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Last Modified: UTC

Important Important Impact What does this mean?
7.7 CVSS v3 Base Score

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.

Statement

This vulnerability is of high severity due to its potential to facilitate privilege escalation and user impersonation in systems using SAML for authentication. The core issue stems from improper validation logic in Keycloak's signature validation method, which relies on the position of signatures rather than explicitly checking the referenced elements. By manipulating the XML structure, an attacker can bypass signature validation and inject an unsigned assertion while retaining a valid signed one. This allows unauthorized access to high-privileged accounts, leading to significant security risks in SAML-based identity providers and service providers.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Additional Information

External References

Content from www.cve.org is not included.https://www.cve.org/CVERecord?id=CVE-2024-8698

Content from nvd.nist.gov is not included.https://nvd.nist.gov/vuln/detail/CVE-2024-8698

Affected Packages and Issued Red Hat Security Errata

Products / Services Components State Errata
RHEL-8 based Middleware Containers rh-sso-7/sso76-openshift-rhel8 Fixed RHSA-2024:6882
Red Hat Build of Keycloak org.keycloak/keycloak-saml-core-public Affected
Red Hat Build of Keycloak Fixed RHSA-2024:6888
Red Hat Build of Keycloak org.keycloak/keycloak-saml-core Fixed RHSA-2024:6890
Red Hat JBoss Enterprise Application Platform 8 keycloak-saml-core-public Fixed RHSA-2024:8826
Red Hat JBoss Enterprise Application Platform 8 org.keycloak-keycloak-parent Fixed RHSA-2024:8826
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 eap8-activemq-artemis Fixed RHSA-2024:8823
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 eap8-activemq-artemis-native Fixed RHSA-2024:8823
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 eap8-aesh-extensions Fixed RHSA-2024:8823
Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 eap8-aesh-readline Fixed RHSA-2024:8823
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authorities (CNA) source for its products and services (see Red Hat classifications ).

CVSS v3 Score Breakdown Red Hat NVD
CVSS v3 Base Score 7.7
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact Low
Availability Impact Low

CVSS v3 Vector

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

Acknowledgements

Red Hat would like to thank Tanner Emek for reporting this issue.

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

 For open source software shipped by multiple vendors, the CVSS base scores may vary for each vendor's version depending on the version they ship, how they ship it, the platform, and even how the software is compiled. This makes scoring of vulnerabilities difficult for third-party vulnerability databases such as NVD that only provide a single CVSS base score for each vulnerability. Red Hat scores reflect how a vulnerability affects our products specifically.

For more information, see https://access.redhat.com/solutions/762393.

My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?
  • "Under investigation" doesn't necessarily mean that the product is affected by this vulnerability. It only means that our Analysis Team is still working on determining whether the product is affected and how it is affected.
  • "Affected" means that our Analysis Team has determined that this product is affected by this vulnerability and might release a fix to address this in the near future.

What can I do if my product is listed as "Will not fix"?

 A "will not fix" status means that a fix for an affected product version is not planned or not possible due to complexity, which may create additional risk.

Available options depend mostly on the Impact of the vulnerability and the current Life Cycle phase of your product. Overall, you have the following options:
  • Upgrade to a supported product version that includes a fix for this vulnerability (recommended).
  • Apply a mitigation (if one exists).
  • Open a This content is not included.support case to request a prioritization of releasing a fix for this vulnerability.

What can I do if my product is listed as "Fix deferred"?

 A deferred status means that a fix for an affected product version is not guaranteed due to higher-priority development work.

Available options depend mostly on the Impact of the vulnerability and the current Life Cycle phase of your product. Overall, you have the following options:
  • Apply a mitigation (if one exists).
  • Open a This content is not included.support case to request a prioritization of releasing a fix for this vulnerability.
  • Red Hat Engineering focuses on addressing high-priority issues based on their complexity or limited lifecycle support. Therefore, lower-priority issues will not receive immediate fixes.

What is a mitigation?

 A mitigation is an action that can be taken to reduce the impact of a security vulnerability, without deploying any fixes.

I have a Red Hat product but it is not in the above list, is it affected?

 The listed products were found to include one or more of the components that this vulnerability affects. These products underwent a thorough evaluation to determine their affectedness by this vulnerability. Note that layered products (such as container-based offerings) that consume affected components from any of the products listed in this table may be affected and are not represented.

Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?

 In order to maintain code stability and compatibility, Red Hat usually does not rebase packages to entirely new versions. Instead, we backport fixes and new features to an older version of the package we distribute. This can result in some security scanners that only consider the package version to report the package as vulnerable. To avoid this, we suggest that you use an approved vulnerability scanner from our This content is not included.Red Hat Vulnerability Scanner Certification program.