CVE-2023-48228
OAuth2: PKCE can be fully circumvented
9.8
CRITICAL
CVSS 3.1
EPSS 1.2%
描述
authentik is an open-source identity provider. When initialising a oauth2 flow with a `code_challenge` and `code_method` (thus requesting PKCE), the single sign-on provider (authentik) must check if there is a matching and existing `code_verifier` during the token step. Prior to versions 2023.10.4 and 2023.8.5, authentik checks if the contents of `code_verifier` is matching only when it is provided. When it is left out completely, authentik simply accepts the token request with out it; even when the flow was started with a `code_challenge`. authentik 2023.8.5 and 2023.10.4 fix this issue.
如何修補 CVE-2023-48228
要修補 CVE-2023-48228,請將受影響套件升級到下列已修補版本。
- —升級至 2023.8.5 或更新版本
CVE-2023-48228 正在被利用嗎?
低 — EPSS 為 1.2%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 2023.8.5, >= 2023.10.0, < 2023.10.4
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |