Описание
The redirect_uri validation logic allows for bypassing explicitly allowed hosts that would otherwise be restricted
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:y@example.com" 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 This happens because the validation logic is performed on a URL decoded version, which no longer represents the original input.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
Ссылки
- 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
Пакеты
org.keycloak:keycloak-services
< 23.0.3
23.0.3
Связанные уязвимости
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.
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.
A flaw was found in the redirect_uri validation logic in Keycloak. Thi ...