Advisory details:
gitlab / maven/org.keycloak/keycloak-services/CVE-2023-6291
| Advisory ID | gitlab/maven/org.keycloak/keycloak-services/CVE-2023-6291 |
| Aliases |
CVE-2023-6291
GHSA-mpwq-j3xf-7m5w |
| Summary | 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](https://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 This happens because the validation logic is performed on a URL decoded version, which no longer represents the original input.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 |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 0.0 |
| Risk | |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.keycloak/keycloak-services/CVE-2023-6291.yml |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/keycloak/keycloak/commit/b2e91105315ccf2c1df549b4f6c5948322cbfd1b | ||
| GHSA-mpwq-j3xf-7m5w | https://github.com/advisories/GHSA-mpwq-j3xf-7m5w | |
| GHSA-mpwq-j3xf-7m5w | https://github.com/keycloak/keycloak/security/advisories/GHSA-mpwq-j3xf-7m5w |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-11-13T14:56:46Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2023/6xxx/CVE-2023-6291.json
Source Advisory: vulnrichment/CVE-2023-6291
[{'Exploitation': 'none'},
{'Automatable': 'no'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]