CVE-2021-41125
If you use `HttpAuthMiddleware` (i.e. the `http_user` and `http_pass` spider attributes) for HTTP authentication, all requests will expose your credentials to the request target.
Does this matter?
Lower severity and a low EPSS score (1.26%). Track it; it rarely justifies an emergency change on its own.
Description
Scrapy is a high-level web crawling and scraping framework for Python. If you use `HttpAuthMiddleware` (i.e. the `http_user` and `http_pass` spider attributes) for HTTP authentication, all requests will expose your credentials to the request target. This includes requests generated by Scrapy components, such as `robots.txt` requests sent by Scrapy when the `ROBOTSTXT_OBEY` setting is set to `True`, or as requests reached through redirects. Upgrade to Scrapy 2.5.1 and use the new `http_auth_domain` spider attribute to control which domains are allowed to receive the configured HTTP authentication credentials. If you are using Scrapy 1.8 or a lower version, and upgrading to Scrapy 2.5.1 is not an option, you may upgrade to Scrapy 1.8.1 instead. If you cannot upgrade, set your HTTP authentication credentials on a per-request basis, using for example the `w3lib.http.basic_auth_header` function to convert your credentials into a value that you can assign to the `Authorization` header of your request, instead of defining your credentials globally using `HttpAuthMiddleware`.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.26% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-522
- Affected
- scrapy/scrapy · debian/debian linux
- Source
- security-advisories@github.com
References
- http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauthVendor Advisory
- https://github.com/scrapy/scrapy/commit/b01d69a1bf48060daec8f751368622352d8b85a6Patch, Third Party Advisory
- https://github.com/scrapy/scrapy/security/advisories/GHSA-jwqp-28gf-p498Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00021.htmlMailing List, Third Party Advisory
- https://w3lib.readthedocs.io/en/latest/w3lib.html#w3lib.http.basic_auth_headerThird Party Advisory
- http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauthVendor Advisory
- https://github.com/scrapy/scrapy/commit/b01d69a1bf48060daec8f751368622352d8b85a6Patch, Third Party Advisory
- https://github.com/scrapy/scrapy/security/advisories/GHSA-jwqp-28gf-p498Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00021.htmlMailing List, Third Party Advisory
- https://w3lib.readthedocs.io/en/latest/w3lib.html#w3lib.http.basic_auth_headerThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.