CVE-2023-36456— authentik 安全漏洞
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 2023.4.3版本、2023.5.5版本存在安全漏洞，该漏洞源于不会验证 Python 代码和 go 中的 X-Forwarded-For 和 X-Real-IP 标头的来源。
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application
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一、 漏洞 CVE-2023-36456 基础信息
漏洞信息
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Vulnerability Title
Authentik lacks Proxy IP headers validation
来源: CVE Program / CVE List V5
Vulnerability Description
authentik is an open-source Identity Provider. Prior to versions 2023.4.3 and 2023.5.5, authentik does not verify the source of the X-Forwarded-For and X-Real-IP headers, both in the Python code and the go code. Only authentik setups that are directly accessible by users without a reverse proxy are susceptible to this. Possible spoofing of IP addresses in logs, downstream applications proxied by (built in) outpost, IP bypassing in custom flows if used.
This poses a possible security risk when someone has flows or policies that check the user's IP address, e.g. when they want to ignore the user's 2 factor authentication when the user is connected to the company network. A second security risk is that the IP addresses in the logfiles and user sessions are not reliable anymore. Anybody can spoof this address and one cannot verify that the user has logged in from the IP address that is in their account's log. A third risk is that this header is passed on to the proxied application behind an outpost. The application may do any kind of verification, logging, blocking or rate limiting based on the IP address, and this IP address can be overridden by anybody that want to.
Versions 2023.4.3 and 2023.5.5 contain a patch for this issue.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
解释冲突
来源: CVE Program / CVE List V5
Vulnerability Title
authentik 安全漏洞
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 2023.4.3版本、2023.5.5版本存在安全漏洞，该漏洞源于不会验证 Python 代码和 go 中的 X-Forwarded-For 和 X-Real-IP 标头的来源。
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 | < 2023.4.3 | - |
|
二、漏洞 CVE-2023-36456 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2023-36456 补丁与修复 (2)
CVE-2023-36456 厂商安全公告 (1)
-
https://github.com/goauthentik/authentik/security/advisories/GHSA-cmxp-jcw7-jjjv x_refsource_CONFIRM
CVE-2023-36456 其他参考 (2)
-
https://goauthentik.io/docs/releases/2023.5#fixed-in-202355 x_refsource_MISC
-
https://goauthentik.io/docs/releases/2023.4#fixed-in-202343 x_refsource_MISC
IV. Related Vulnerabilities
V. Comments for CVE-2023-36456
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