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CVE-2024-37891— urllib3 安全漏洞

一分钟漏洞结论

影响对象
urllib3 urllib3
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。

urllib3是一款Python HTTP库。该产品具有线程安全连接池、文件发布支持等。 urllib3存在安全漏洞，该漏洞源于跨域重定向期间不会剥离代理授权请求标头。

CVSS 4.4 · Medium EPSS 1.14% · P66

可能的 ATT&CK 技术 1 AI

T1530 · Data from Cloud Storage
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一、 漏洞 CVE-2024-37891 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
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Vulnerability Title
Proxy-Authorization request header isn't stripped during cross-origin redirects in urllib3
来源: CVE Program / CVE List V5
Vulnerability Description
urllib3 is a user-friendly HTTP client library for Python. When using urllib3's proxy support with `ProxyManager`, the `Proxy-Authorization` header is only sent to the configured proxy, as expected. However, when sending HTTP requests *without* using urllib3's proxy support, it's possible to accidentally configure the `Proxy-Authorization` header even though it won't have any effect as the request is not using a forwarding proxy or a tunneling proxy. In those cases, urllib3 doesn't treat the `Proxy-Authorization` HTTP header as one carrying authentication material and thus doesn't strip the header on cross-origin redirects. Because this is a highly unlikely scenario, we believe the severity of this vulnerability is low for almost all users. Out of an abundance of caution urllib3 will automatically strip the `Proxy-Authorization` header during cross-origin redirects to avoid the small chance that users are doing this on accident. Users should use urllib3's proxy support or disable automatic redirects to achieve safe processing of the `Proxy-Authorization` header, but we still decided to strip the header by default in order to further protect users who aren't using the correct approach. We believe the number of usages affected by this advisory is low. It requires all of the following to be true to be exploited: 1. Setting the `Proxy-Authorization` header without using urllib3's built-in proxy support. 2. Not disabling HTTP redirects. 3. Either not using an HTTPS origin server or for the proxy or target origin to redirect to a malicious origin. Users are advised to update to either version 1.26.19 or version 2.2.2. Users unable to upgrade may use the `Proxy-Authorization` header with urllib3's `ProxyManager`, disable HTTP redirects using `redirects=False` when sending requests, or not user the `Proxy-Authorization` header as mitigations.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
在范围间的资源转移不正确
来源: CVE Program / CVE List V5
Vulnerability Title
urllib3 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
urllib3是一款Python HTTP库。该产品具有线程安全连接池、文件发布支持等。 urllib3存在安全漏洞，该漏洞源于跨域重定向期间不会剥离代理授权请求标头。
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
urllib3 urllib3 < 1.26.19 -

二、漏洞 CVE-2024-37891 的公开POC

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三、漏洞 CVE-2024-37891 的情报信息

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CVE-2024-37891 补丁与修复 (1)

CVE-2024-37891 厂商安全公告 (1)

IV. Related Vulnerabilities

Same product: urllib3
Same vendor: urllib3
Same weakness: CWE-669

V. Comments for CVE-2024-37891

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