Infinite loop in [UNKNOWN] keycloak
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-835.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| [UNKNOWN] | keycloak | Keycloak 4.0.0.Final | — | No fix listed | CNA |
| — | org.keycloak:keycloak-core (Maven) | before 4.0.0 | 4.0.0 | Patch available | GHSA-h7j7-pw3v-3v3x |
- keycloak Vendor[UNKNOWN] Affected Keycloak 4.0.0.Final Fixed in — No fix listed CNA
- org.keycloak:keycloak-core (Maven) Vendor— Affected before 4.0.0 Fixed in 4.0.0 Patch available GHSA-h7j7-pw3v-3v3x
Remediation
- Fix · GHSA-h7j7-pw3v-3v3x org.keycloak:keycloak-core (Maven) Fixed in 4.0.0 Advisory →
Red Hat 2 advisories
- RHSA-2019:0877 Released 2019-04-24 · Red Hat rating ImportantRed Hat OpenShift Application Runtimes Thorntail 2.4.0 security & bug fix update
- Text-Only RHOAR
- RHSA-2018:2428 Released 2018-08-15 · Red Hat rating ImportantRed Hat Single Sign-On 7.2.4 security update
- Red Hat Single Sign-On 7.2.4 zip
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Application Runtimes | Affected | No fix yet |
| Red Hat Single Sign-On 7 | Affected | No fix yet |
| Red Hat Single Sign-On 7.2.4 zip | Fixed | RHSA-2018:2428 |
| Text-Only RHOAR | Fixed | RHSA-2019:0877 |
Not affected: 2 products
- Red Hat Fuse 7
- Red Hat Mobile Application Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2018-10912
- 2026-10-03 Alias added: GHSA-h7j7-pw3v-3v3x
References
More Red Hat Keycloak vulnerabilities
- TI-2024-01049 Keycloak: path transversal in redirection validation CVSS 3.1HIGH 8.1
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
- TI-2020-08665 Server-side request forgery in keycloak CVSS 3.1MEDIUM 5.3
- TI-2022-03468 Path traversal in Red Hat Keycloak CVSS 3.1CRITICAL 9.1
- TI-2021-03612 A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak. CVSS 3.1MEDIUM 6.1
- TI-2022-03994 Cross-site scripting in keycloak CVSS 3.1CRITICAL 10.0
Sources
- CVE-2018-10912 · CVE Program
- CVE-2018-10912 · NVD
- FIRST EPSS
- GHSA-h7j7-pw3v-3v3x · GitHub Advisory Database · CC BY 4.0
- CVE-2018-10912 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences