CVE-2022-23555— authentik 授权问题漏洞
一分钟漏洞结论
影响对象
goauthentik authentik
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
authentik是authentik开源的一个开源身份提供应用程序。 authentik存在授权问题漏洞，该漏洞源于容易受到不正确身份验证的影响，邀请URL中的令牌重用导致通过使用与所提供的不同的注册流程绕过访问控制。
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一、 漏洞 CVE-2022-23555 基础信息
漏洞信息
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Vulnerability Title
authentik vulnerable to Improper Authentication via invitation URL token reuse
来源: CVE Program / CVE List V5
Vulnerability Description
authentik is an open-source Identity Provider focused on flexibility and versatility. Versions prior to 2022.11.4 and 2022.10.4 are vulnerable to Improper Authentication. Token reuse in invitation URLs leads to access control bypass via the use of a different enrollment flow than in the one provided. The vulnerability allows an attacker that knows different invitation flows names (e.g. `enrollment-invitation-test` and `enrollment-invitation-admin`) via either different invite links or via brute forcing to signup via a single invitation url for any valid invite link received (it can even be a url for a third flow as long as it's a valid invite) as the token used in the `Invitations` section of the Admin interface does NOT change when a different `enrollment flow` is selected via the interface and it is NOT bound to the selected flow, so it will be valid for any flow when used. This issue is patched in authentik 2022.11.4,2022.10.4 and 2022.12.0. Only configurations that use invitations and have multiple enrollment flows with invitation stages that grant different permissions are affected. The default configuration is not vulnerable, and neither are configurations with a single enrollment flow. As a workaround, fixed data can be added to invitations which can be checked in the flow to deny requests. Alternatively, an identifier with high entropy (like a UUID) can be used as flow slug, mitigating the attack vector by exponentially decreasing the possibility of discovering other flows.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
authentik 授权问题漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
authentik是authentik开源的一个开源身份提供应用程序。 authentik存在授权问题漏洞，该漏洞源于容易受到不正确身份验证的影响，邀请URL中的令牌重用导致通过使用与所提供的不同的注册流程绕过访问控制。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| goauthentik | authentik | >= 2022.11.0, < 2022.11.4 | - |
|
二、漏洞 CVE-2022-23555 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2022-23555 厂商安全公告 (1)
-
https://github.com/goauthentik/authentik/security/advisories/GHSA-9qwp-jf7p-vr7h x_refsource_CONFIRM
IV. Related Vulnerabilities
V. Comments for CVE-2022-23555
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