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CVE-2021-41124— Splash authentication credentials potentially leaked to target websites in scrapy-splash

Quick assessment

Affected
scrapy-plugins scrapy-splash
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Scrapy是一个用Python编写的自由且开源的网络爬虫框架。 Scrapy Scrapy-splash 存在信息泄露漏洞，该漏洞源于网络系统或产品在运行过程中存在配置等错误。未授权的攻击者可利用漏洞获取受影响组件敏感信息。

CVSS 7.4 · High EPSS 1.12% · P64

Possible ATT&CK Techniques 1 AI

T1552.001 · Credentials In Files
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I. Basic Information for CVE-2021-41124

Vulnerability Information
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Vulnerability Title
Splash authentication credentials potentially leaked to target websites in scrapy-splash
Source: CVE Program / CVE List V5
Vulnerability Description
Scrapy-splash is a library which provides Scrapy and JavaScript integration. In affected versions users who use [`HttpAuthMiddleware`](http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth) (i.e. the `http_user` and `http_pass` spider attributes) for Splash authentication will have any non-Splash request expose your credentials to the request target. This includes `robots.txt` requests sent by Scrapy when the `ROBOTSTXT_OBEY` setting is set to `True`. Upgrade to scrapy-splash 0.8.0 and use the new `SPLASH_USER` and `SPLASH_PASS` settings instead to set your Splash authentication credentials safely. If you cannot upgrade, set your Splash request credentials on a per-request basis, [using the `splash_headers` request parameter](https://github.com/scrapy-plugins/scrapy-splash/tree/0.8.x#http-basic-auth), instead of defining them globally using the [`HttpAuthMiddleware`](http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth). Alternatively, make sure all your requests go through Splash. That includes disabling the [robots.txt middleware](https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#topics-dlmw-robots).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Scrapy 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Scrapy是一个用Python编写的自由且开源的网络爬虫框架。 Scrapy Scrapy-splash 存在信息泄露漏洞，该漏洞源于网络系统或产品在运行过程中存在配置等错误。未授权的攻击者可利用漏洞获取受影响组件敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
scrapy-plugins scrapy-splash < 0.8.0 -

II. Public POCs for CVE-2021-41124

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III. Intelligence Information for CVE-2021-41124

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Vendor Advisories for CVE-2021-41124 (1)

IV. Related Vulnerabilities

Same weakness: CWE-200

V. Comments for CVE-2021-41124

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