CVE-2018-10912

keycloak: infinite loop in session replacement leading to denial of service

Severity Score

4.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

keycloak before version 4.0.0.final is vulnerable to a infinite loop in session replacement. A Keycloak cluster with multiple nodes could mishandle an expired session replacement and lead to an infinite loop. A malicious authenticated user could use this flaw to achieve Denial of Service on the server.

keycloak en versiones anteriores a la 4.0.0.final es vulnerable a un bucle infinito en el reemplazo de sesiones. Un clúster de Keycloak con múltiples nodos podría gestionar erróneamente un reemplazo de sesión erróneo y conducir a un bucle infinito. Un usuario autenticado malicioso podría emplear este error para lograr una denegación de servicio (DoS) en el servidor.

Red Hat OpenShift Application Runtimes provides an application platform that reduces the complexity of developing and operating applications for OpenShift as a containerized platform. This release of RHOAR Thorntail 2.4.0 serves as a replacement for RHOAR Thorntail 2.2.0, and includes security and bug fixes and enhancements. For further information, refer to the release notes linked to in the References section. Issues addressed include code execution, denial of service, deserialization, and traversal vulnerabilities.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-05-09 CVE Reserved
2018-07-23 CVE Published
2024-08-05 CVE Updated
2025-05-08 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:2428	2021-04-22
https://access.redhat.com/errata/RHSA-2019:0877	2021-04-22
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10912	2021-04-22
https://access.redhat.com/security/cve/CVE-2018-10912	2019-04-24
https://bugzilla.redhat.com/show_bug.cgi?id=1607624	2019-04-24

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Keycloak Search vendor "Redhat" for product "Keycloak"				< 4.0.0 Search vendor "Redhat" for product "Keycloak" and version " < 4.0.0"		-		Affected
Redhat Search vendor "Redhat"		Single Sign-on Search vendor "Redhat" for product "Single Sign-on"				7.2 Search vendor "Redhat" for product "Single Sign-on" and version "7.2"		-		Affected