Debian 9: DLA-2655-1 Moderate: Rails Info Disclosure and DoS Threats

There is a possible information disclosure/unintended method
execution vulnerability in Action Pack when using the
`redirect_to` or `polymorphic_url` helper with untrusted user
input.

CVE-2021-22904

There is a possible DoS vulnerability in the Token Authentication
logic in Action Controller. Impacted code uses
`authenticate_or_request_with_http_token` or
`authenticate_with_http_token` for request authentication.

For Debian 9 stretch, these problems have been fixed in version
2:4.2.7.1-1+deb9u5.

We recommend that you upgrade your rails packages.

For the detailed security status of rails please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/rails

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS