CVE-2021-41125
Published: 6 October 2021
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`.
Priority
Status
Package | Release | Status |
---|---|---|
python-scrapy Launchpad, Ubuntu, Debian |
bionic |
Needed
|
focal |
Needed
|
|
hirsute |
Ignored
(end of life)
|
|
impish |
Ignored
(end of life)
|
|
jammy |
Needed
|
|
kinetic |
Ignored
(end of life, was needed)
|
|
lunar |
Ignored
(end of life, was needed)
|
|
mantic |
Needed
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.5.1-1, 1.8.1, 2.5.1)
|
|
xenial |
Needs triage
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
References
- https://github.com/scrapy/scrapy/security/advisories/GHSA-jwqp-28gf-p498
- https://github.com/scrapy/scrapy/commit/b01d69a1bf48060daec8f751368622352d8b85a6
- https://w3lib.readthedocs.io/en/latest/w3lib.html#w3lib.http.basic_auth_header
- http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth
- https://www.cve.org/CVERecord?id=CVE-2021-41125
- NVD
- Launchpad
- Debian