CVE-2021-32677— fastapi-utils跨站请求伪造漏洞
一分钟漏洞结论
影响对象
tiangolo fastapi
利用判断
存在公开或 AI PoC，应优先验证
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。
fastapi-utils是一个应用软件。可重用工具为FastAPI fastapi-utils存在跨站请求伪造漏洞，该漏洞源于FastAPI 0.65.2版本及以下版本在接收浏览器发送的JSON负载的路径操作中使用cookie进行身份验证，容易受到跨站点请求伪造(CSRF)攻击。
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application
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一、 漏洞 CVE-2021-32677 基础信息
漏洞信息
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Vulnerability Title
Cross-Site Request Forgery (CSRF) in FastAPI
来源: CVE Program / CVE List V5
Vulnerability Description
FastAPI is a web framework for building APIs with Python 3.6+ based on standard Python type hints. FastAPI versions lower than 0.65.2 that used cookies for authentication in path operations that received JSON payloads sent by browsers were vulnerable to a Cross-Site Request Forgery (CSRF) attack. In versions lower than 0.65.2, FastAPI would try to read the request payload as JSON even if the content-type header sent was not set to application/json or a compatible JSON media type (e.g. application/geo+json). A request with a content type of text/plain containing JSON data would be accepted and the JSON data would be extracted. Requests with content type text/plain are exempt from CORS preflights, for being considered Simple requests. The browser will execute them right away including cookies, and the text content could be a JSON string that would be parsed and accepted by the FastAPI application. This is fixed in FastAPI 0.65.2. The request data is now parsed as JSON only if the content-type header is application/json or another JSON compatible media type like application/geo+json. It's best to upgrade to the latest FastAPI, but if updating is not possible then a middleware or a dependency that checks the content-type header and aborts the request if it is not application/json or another JSON compatible content type can act as a mitigating workaround.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
来源: CVE Program / CVE List V5
Vulnerability Title
fastapi-utils跨站请求伪造漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
fastapi-utils是一个应用软件。可重用工具为FastAPI fastapi-utils存在跨站请求伪造漏洞，该漏洞源于FastAPI 0.65.2版本及以下版本在接收浏览器发送的JSON负载的路径操作中使用cookie进行身份验证，容易受到跨站点请求伪造(CSRF)攻击。
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
二、漏洞 CVE-2021-32677 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
Qwen3.6-35B-A3B
· 6271 chars
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三、漏洞 CVE-2021-32677 的情报信息
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CVE-2021-32677 补丁与修复 (1)
CVE-2021-32677 厂商安全公告 (1)
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https://github.com/tiangolo/fastapi/security/advisories/GHSA-8h2j-cgx8-6xv7 x_refsource_CONFIRM
CVE-2021-32677 邮件列表归档 (1)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MATAWX25TYKNEKLDMKWNLYDB34UWTROA/ vendor-advisory x_refsource_FEDORA
IV. Related Vulnerabilities
V. Comments for CVE-2021-32677
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