目标达成 感谢每一位支持者 — 我们达成了 100% 目标！

目标: 1000 元 · 已筹: 1336 元

100%
请我们喝杯咖啡

CVE-2021-32618— flask-security 输入验证错误漏洞

一分钟漏洞结论

影响对象
Flask-Middleware flask-security
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。

flask-security是一个应用软件。快速向Flask应用程序添加安全功能。 Flask-Security-Too 存在输入验证错误漏洞，攻击者可以使用合法站点将此类链接发送给不知情的用户，然后将其重定向到他们想要的任何站点。

CVSS 3.1 · Low EPSS 3.29% · P88

公开利用映射 1

Nuclei · 1 CVE-2021-32618.yaml [template]
获取后续新漏洞提醒 登录后订阅

一、 漏洞 CVE-2021-32618 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！
查看神龙十问 ↗

尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。

Vulnerability Title
Open Redirect Vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
The Python "Flask-Security-Too" package is used for adding security features to your Flask application. It is an is an independently maintained version of Flask-Security based on the 3.0.0 version of Flask-Security. All versions of Flask-Security-Too allow redirects after many successful views (e.g. /login) by honoring the ?next query param. There is code in FS to validate that the url specified in the next parameter is either relative OR has the same netloc (network location) as the requesting URL. This check utilizes Pythons urlsplit library. However many browsers are very lenient on the kind of URL they accept and 'fill in the blanks' when presented with a possibly incomplete URL. As a concrete example - setting http://login?next=\\\github.com will pass FS's relative URL check however many browsers will gladly convert this to http://github.com. Thus an attacker could send such a link to an unwitting user, using a legitimate site and have it redirect to whatever site they want. This is considered a low severity due to the fact that if Werkzeug is used (which is very common with Flask applications) as the WSGI layer, it by default ALWAYS ensures that the Location header is absolute - thus making this attack vector mute. It is possible for application writers to modify this default behavior by setting the 'autocorrect_location_header=False`.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
来源: CVE Program / CVE List V5
Vulnerability Title
flask-security 输入验证错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
flask-security是一个应用软件。快速向Flask应用程序添加安全功能。 Flask-Security-Too 存在输入验证错误漏洞，攻击者可以使用合法站点将此类链接发送给不知情的用户，然后将其重定向到他们想要的任何站点。
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
Flask-Middleware flask-security <= 4.0.1 -

二、漏洞 CVE-2021-32618 的公开POC

# POC 描述 源链接 神龙链接
1 Python Flask-Security contains an open redirect vulnerability. Existing code validates that the URL specified in the next parameter is either relative or has the same network location as the requesting URL. Certain browsers accept and fill in the blanks of possibly incomplete or malformed URLs. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-32618.yaml POC详情
AI 生成 POC 高级

未找到公开 POC。

登录以生成 AI POC

三、漏洞 CVE-2021-32618 的情报信息

请登录查看更多情报信息。

CVE-2021-32618 厂商安全公告 (1)

CVE-2021-32618 其他参考 (1)

IV. Related Vulnerabilities

Same product: flask-security
Same vendor: Flask-Middleware
Same weakness: CWE-601

V. Comments for CVE-2021-32618

暂无评论

发表评论