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Reliance on Cookies without Validation and Integrity Checking

CVE-2021-41263

High
8.8/10

Summary

rails_multisite provides multi-db support for Rails applications. In affected versions prior to 4.0.0 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. 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.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • LOW
  • HIGH
  • HIGH

CWE-565 - Reliance on Cookies without Validation and Integrity Checking

The application relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user.

References

Advisory Timeline

  • Published