Authentik 中的 PKCE 降级攻击 (CVE-2024-23647)

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2024-02-04 09:48:12 Ali_nvd 来源：ZONE.CI 全球网 0 阅读模式

Authentik 中的 PKCE 降级攻击 (CVE-2024-23647)

CVE编号

CVE-2024-23647

利用情况

暂无

补丁情况

N/A

披露时间

2024-01-31

漏洞描述

Authentik is an open-source Identity Provider. There is a bug in our implementation of PKCE that allows an attacker to circumvent the protection that PKCE offers. PKCE adds the code_challenge parameter to the authorization request and adds the code_verifier parameter to the token request. Prior to 2023.8.7 and 2023.10.7, a downgrade scenario is possible: if the attacker removes the code_challenge parameter from the authorization request, authentik will not do the PKCE check. Because of this bug, an attacker can circumvent the protection PKCE offers, such as CSRF attacks and code injection attacks. Versions 2023.8.7 and 2023.10.7 fix the issue.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://github.com/goauthentik/authentik/commit/38e04ae12720e5d81b4f7ac77997e...
https://github.com/goauthentik/authentik/security/advisories/GHSA-mrx3-gxjx-hjqj