GHSA-844m-cpr9-jcmh
Rails Multisite secure/signed cookies share secrets between sites in a multi-site application
Quick fix
GHSA-844m-cpr9-jcmh — rails_multisite: upgrade to the fixed version with the command below.
bundle update rails_multisiteDetails
### Impact This vulnerability impacts any Rails applications using `rails_multisite` alongside Rails' signed/encrypted cookies. Depending on how the application makes use of these cookies, it may be possible for an attacker to re-use cookies on different 'sites' within a multi-site Rails application.
### Patches The issue has been patched in v4 of the `rails_multisite` gem. Note that this upgrade will invalidate all previous signed/encrypted cookies. The impact of this invalidation will vary based on the application architecture.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://github.com/discourse/rails_multisite/security/advisories/GHSA-844m-cpr9-jcmh[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2021-41263[ADVISORY]
- https://github.com/discourse/rails_multisite/commit/c6785cdb5c9277dd2c5ac8d55180dd1ece440ed0[WEB]
- https://github.com/discourse/rails_multisite[PACKAGE]
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails_multisite/CVE-2021-41263.yml[WEB]