urllib3 doesn't treat the Cookie HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a Cookie header and unknowingly leak information via HTTP redirects to a different origin if that user doesn't disable redirects explicitly.
Users must handle redirects themselves instead of relying on urllib3's automatic redirects to achieve safe processing of the Cookie header, thus we decided to strip the header by default in order to further protect users who aren't using the correct approach.
Affected usages
We believe the number of usages affected by this advisory is low. It requires all of the following to be true to be exploited:
Using an affected version of urllib3 (patched in v1.26.17 and v2.0.6)
Using the Cookie header on requests, which is mostly typical for impersonating a browser.
Not disabling HTTP redirects
Either not using HTTPS or for the origin server to redirect to a malicious origin.
Remediation
Upgrading to at least urllib3 v1.26.17 or v2.0.6
Disabling HTTP redirects using redirects=False when sending requests.
Not using the Cookie header.
Release Notes
urllib3/urllib3 (urllib3)
### [`v1.26.17`](https://togithub.com/urllib3/urllib3/compare/1.26.16...1.26.17)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.16...1.26.17)
### [`v1.26.16`](https://togithub.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12616-2023-05-23)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.15...1.26.16)
\====================
- Fixed thread-safety issue where accessing a `PoolManager` with many distinct origins
would cause connection pools to be closed while requests are in progress (`#2954 `\_)
### [`v1.26.15`](https://togithub.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12615-2023-03-10)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.14...1.26.15)
\====================
- Fix socket timeout value when `HTTPConnection` is reused (`#2645 `\__)
- Remove "!" character from the unreserved characters in IPv6 Zone ID parsing
(`#2899 `\__)
- Fix IDNA handling of '\x80' byte (`#2901 `\__)
### [`v1.26.14`](https://togithub.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12614-2023-01-11)
[Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.13...1.26.14)
\====================
- Fixed parsing of port 0 (zero) returning None, instead of 0. (`#2850 `\__)
- Removed deprecated getheaders() calls in contrib module. Fixed the type hint of `PoolKey.key_retries` by adding `bool` to the union. (`#2865 `\__)
Configuration
📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).
🚦 Automerge: Enabled.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about these updates again.
[ ] If you want to rebase/retry this PR, check this box
This PR has been generated by Mend Renovate. View repository job log here.
This PR contains the following updates:
==1.26.13->==1.26.17GitHub Vulnerability Alerts
CVE-2023-43804
urllib3 doesn't treat the
CookieHTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify aCookieheader and unknowingly leak information via HTTP redirects to a different origin if that user doesn't disable redirects explicitly.Users must handle redirects themselves instead of relying on urllib3's automatic redirects to achieve safe processing of the
Cookieheader, thus we decided to strip the header by default in order to further protect users who aren't using the correct approach.Affected usages
We believe the number of usages affected by this advisory is low. It requires all of the following to be true to be exploited:
Cookieheader on requests, which is mostly typical for impersonating a browser.Remediation
redirects=Falsewhen sending requests.Cookieheader.Release Notes
urllib3/urllib3 (urllib3)
### [`v1.26.17`](https://togithub.com/urllib3/urllib3/compare/1.26.16...1.26.17) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.16...1.26.17) ### [`v1.26.16`](https://togithub.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12616-2023-05-23) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.15...1.26.16) \==================== - Fixed thread-safety issue where accessing a `PoolManager` with many distinct origins would cause connection pools to be closed while requests are in progress (`#2954Configuration
📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).
🚦 Automerge: Enabled.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about these updates again.
This PR has been generated by Mend Renovate. View repository job log here.