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CVE-2024-11734

UNKNOWN
Published 2025-01-14T08:35:42.107Z
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CVSS Score

V3.1
6.5
/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.191
Higher than 19.1% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

A denial of service vulnerability was found in Keycloak that could allow an administrative user with the right to change realm settings to disrupt the service. This action is done by modifying any of the security headers and inserting newlines, which causes the Keycloak server to write to a request that has already been terminated, leading to the failure of said request.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Unknown Vendor

Unknown Product

Affected Versions:

0
Red Hat

Red Hat build of Keycloak 26.0

Affected Versions:

26.0.8-1
Red Hat

Red Hat build of Keycloak 26.0

Affected Versions:

26.0-7
Red Hat

Red Hat build of Keycloak 26.0

Affected Versions:

26.0-8
Red Hat

RHBK 26.0.8

Red Hat

Red Hat JBoss Enterprise Application Platform 8

Red Hat

Red Hat JBoss Enterprise Application Platform Expansion Pack

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Denial of Service in Keycloak Server via Security Headers

GHSA-w3g8-r9gw-qrh8

Advisory Details

A potential Denial of Service (DoS) vulnerability has been identified in Keycloak, which could allow an administrative user with the rights to change realm settings to disrupt the service. This is done by modifying any of the security headers and inserting newlines, which causes the Keycloak server to write to a request that is already terminated, leading to a failure of said request. Service disruption may happen, users will be unable to access applications relying on Keycloak, or any of the consoles provided by Keycloak itself on the affected realm.

Affected Packages

Maven org.keycloak:keycloak-quarkus-server
ECOSYSTEM: ≥0 <26.0.8

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

WEB https://github.com/keycloak/keycloak/security/advisories/GHSA-w3g8-r9gw-qrh8
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-11734
WEB https://github.com/keycloak/keycloak/commit/93b2a7327b2557eb132a8169086c5e63c81dff79
WEB https://access.redhat.com/errata/RHSA-2025:0299
WEB https://access.redhat.com/errata/RHSA-2025:0300
WEB https://access.redhat.com/security/cve/CVE-2024-11734
WEB https://bugzilla.redhat.com/show_bug.cgi?id=2328846
PACKAGE https://github.com/keycloak/keycloak

Advisory provided by GitHub Security Advisory Database. Published: January 13, 2025, Modified: January 14, 2025

References

https://access.redhat.com/errata/RHSA-2025:0299
https://access.redhat.com/errata/RHSA-2025:0300
https://access.redhat.com/security/cve/CVE-2024-11734
https://bugzilla.redhat.com/show_bug.cgi?id=2328846
Published: 2025-01-14T08:35:42.107Z
Last Modified: 2025-03-19T14:52:05.242Z
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