CVE-2022-31027— OAuthenticator 安全漏洞
一分钟漏洞结论
影响对象
jupyterhub oauthenticator
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。
OAuthenticator是JupyerHub 登录处理程序的 OAuth 令牌库。 OAuthenticator 14.2.0 及之前版本存在安全漏洞，该漏洞源于CILogon 是一个联合身份验证提供程序，它允许用户通过多个身份提供程序 (IdP) 进行身份验证。
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一、 漏洞 CVE-2022-31027 基础信息
漏洞信息
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Vulnerability Title
Authorization Bypass Through User-Controlled Key when using CILogonOAuthenticator in oauthenticator
来源: CVE Program / CVE List V5
Vulnerability Description
OAuthenticator is an OAuth token library for the JupyerHub login handler. CILogonOAuthenticator is provided by the OAuthenticator package, and lets users log in to a JupyterHub via CILogon. This is primarily used to restrict a JupyterHub only to users of a given institute. The allowed_idps configuration trait of CILogonOAuthenticator is documented to be a list of domains that indicate the institutions whose users are authorized to access this JupyterHub. This authorization is validated by ensuring that the *email* field provided to us by CILogon has a *domain* that matches one of the domains listed in `allowed_idps`.If `allowed_idps` contains `berkeley.edu`, you might expect only users with valid current credentials provided by University of California, Berkeley to be able to access the JupyterHub. However, CILogonOAuthenticator does *not* verify which provider is used by the user to login, only the email address provided. So a user can login with a GitHub account that has email set to `<something>@berkeley.edu`, and that will be treated exactly the same as someone logging in using the UC Berkeley official Identity Provider. The patch fixing this issue makes a *breaking change* in how `allowed_idps` is interpreted. It's no longer a list of domains, but configuration representing the `EntityID` of the IdPs that are allowed, picked from the [list maintained by CILogon](https://cilogon.org/idplist/). Users are advised to upgrade.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
来源: CVE Program / CVE List V5
Vulnerability Title
OAuthenticator 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
OAuthenticator是JupyerHub 登录处理程序的 OAuth 令牌库。 OAuthenticator 14.2.0 及之前版本存在安全漏洞，该漏洞源于CILogon 是一个联合身份验证提供程序，它允许用户通过多个身份提供程序 (IdP) 进行身份验证。
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 |
|---|---|---|---|---|
| jupyterhub | oauthenticator | < 15.0.0 | - |
|
二、漏洞 CVE-2022-31027 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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CVE-2022-31027 厂商安全公告 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2022-31027
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