GHSA-mpwq-j3xf-7m5w
Dashboard / Vulnerabilities / GHSA-mpwq-j3xf-7m5w
Summary: The redirect_uri validation logic allows for bypassing explicitly allowed hosts that would otherwise be restricted
Details: An issue was found in the redirect_uri validation logic that allows for a bypass of otherwise explicitly allowed hosts. The problem arises in the verifyRedirectUri method, which attempts to enforce rules on user-controllable input, but essentially causes a desynchronization in how Keycloak and browsers interpret URLs. Keycloak, for example, receives "[www%2ekeycloak%2eorg%2fapp%2f:[email protected]](https://www%2ekeycloak%2eorg%2fapp%2f:[email protected]/)" and thinks the authority to be keycloak.org when it is actually example.com. This happens because the validation logic is performed on a URL decoded version, which no longer represents the original input. ### Acknowledgements Karel Knibbe
References: https://github.com/keycloak/keycloak/security/advisories/GHSA-mpwq-j3xf-7m5w, https://nvd.nist.gov/vuln/detail/CVE-2023-6291, https://github.com/keycloak/keycloak/commit/b2e91105315ccf2c1df549b4f6c5948322cbfd1b, 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/keycloak/keycloak
Affected packages
Package
Name: org.keycloak:keycloak-services
Purl: pkg:maven/org.keycloak/keycloak-services
Affected ranges
Type: ECOSYSTEM
Events:
