medium4.6
CVE-2023-6927
keycloak-core: open redirect via "form_post.jwt" JARM response mode
Impact
An incomplete fix was found in Keycloak Core patch. An attacker can steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt". It is observed that changing the response_mode parameter in the original proof of concept from "form_post" to "form_post.jwt" can bypass the security patch implemented to address CVE-2023-6134.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-core | < 23.0.4 | 23.0.4 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | Keycloak | All versions |
| Redhat | Single Sign-On | Version 7.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://access.redhat.com/errata/RHSA-2024:0094
- https://access.redhat.com/errata/RHSA-2024:0095
- https://access.redhat.com/errata/RHSA-2024:0096
- https://access.redhat.com/errata/RHSA-2024:0097
- https://access.redhat.com/errata/RHSA-2024:0098
- https://access.redhat.com/errata/RHSA-2024:0100
- https://access.redhat.com/errata/RHSA-2024:0101
- 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
- https://access.redhat.com/security/cve/CVE-2023-6927
- https://bugzilla.redhat.com/show_bug.cgi?id=2255027
- https://github.com/advisories/GHSA-9vm7-v8wj-3fqw
- https://github.com/keycloak/keycloak/security/advisories/GHSA-9vm7-v8wj-3fqw
- https://nvd.nist.gov/vuln/detail/CVE-2023-6927