CVE-2023-6291: Keycloak: redirect_uri validation bypass
First published: Fri Nov 24 2023(Updated: )
A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| maven/org.keycloak:keycloak-services | <23.0.3 | 23.0.3 |
| Red Hat Keycloak | <22.0.7 | |
| Red Hat Single Sign-On | ||
| All of | ||
| Any of | ||
| Red Hat OpenShift Container Platform | =4.11 | |
| Red Hat OpenShift Container Platform | =4.12 | |
| Red Hat OpenShift Container Platform | =4.9 | |
| Red Hat OpenShift Container Platform | =4.10 | |
| Red Hat OpenShift Container Platform | =4.9 | |
| Red Hat OpenShift Container Platform | =4.10 | |
| Red Hat OpenShift Container Platform for Power | =4.9 | |
| Red Hat OpenShift Container Platform for Power | =4.10 | |
| Red Hat Enterprise Linux | =8.0 | |
| All of | ||
| Red Hat Single Sign-On | =7.6 | |
| Any of | ||
| Red Hat Enterprise Linux | =7.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =9.0 | |
| Red Hat Migration Toolkit for Applications | =6.0 | |
| Red Hat Migration Toolkit for Applications | =7.0 |
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Reference Links
- https://github.com/keycloak/keycloak/security/advisories/GHSA-mpwq-j3xf-7m5w
- https://github.com/keycloak/keycloak/commit/b2e91105315ccf2c1df549b4f6c5948322cbfd1b
- https://nvd.nist.gov/vuln/detail/CVE-2023-6291
- https://access.redhat.com/errata/RHSA-2023:7854
- https://access.redhat.com/errata/RHSA-2023:7855
- https://access.redhat.com/errata/RHSA-2023:7856
- https://access.redhat.com/errata/RHSA-2023:7857
- https://access.redhat.com/errata/RHSA-2023:7858
- https://access.redhat.com/errata/RHSA-2023:7860
- https://access.redhat.com/errata/RHSA-2023:7861
- https://access.redhat.com/security/cve/CVE-2023-6291
- https://bugzilla.redhat.com/show_bug.cgi?id=2251407
- https://github.com/advisories/GHSA-mpwq-j3xf-7m5w (Advisory)
- https://www%2ekeycloak%2eorg%2fapp%2f:y@example.com
- https://github.com/keycloak/keycloak/pull/24819
- https://access.redhat.com/errata/RHSA-2024:0798
- https://access.redhat.com/errata/RHSA-2024:0799
- https://access.redhat.com/errata/RHSA-2024:0800
- https://access.redhat.com/errata/RHSA-2024:0801
- https://access.redhat.com/errata/RHSA-2024:0804
Frequently Asked Questions
What is the severity of CVE-2023-6291?
CVE-2023-6291 is classified as a medium severity vulnerability due to its potential to allow access token theft.
How can I fix CVE-2023-6291?
To fix CVE-2023-6291, update Keycloak to version 23.0.3 or later.
What software is affected by CVE-2023-6291?
CVE-2023-6291 affects Keycloak versions earlier than 23.0.3 and several Red Hat OpenShift Container Platform versions.
What type of attack can be executed using CVE-2023-6291?
An attacker exploiting CVE-2023-6291 can perform access token theft, potentially leading to user impersonation.
Is there a workaround for CVE-2023-6291?
Currently, the only effective mitigation for CVE-2023-6291 is to upgrade the affected software to the latest version.
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