Package Instance

ReDoS based DoS vulnerability in Action Dispatch
There is a possible regular expression based DoS vulnerability in Action Dispatch. Specially crafted cookies, in combination with a specially crafted `X_FORWARDED_HOST` header can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately.

Rails has possible Sensitive Session Information Leak in Active Storage
# Possible Sensitive Session Information Leak in Active Storage

There is a possible sensitive session information leak in Active Storage.  By
default, Active Storage sends a `Set-Cookie` header along with the user's
session cookie when serving blobs.  It also sets `Cache-Control` to public.
Certain proxies may cache the Set-Cookie, leading to an information leak.

This vulnerability has been assigned the CVE identifier CVE-2024-26144.

Versions Affected:  >= 5.2.0, < 7.1.0
Not affected:       < 5.2.0, > 7.1.0
Fixed Versions:     7.0.8.1, 6.1.7.7

Impact
------
A proxy which chooses to caches this request can cause users to share
sessions. This may include a user receiving an attacker's session or vice
versa.

This was patched in 7.1.0 but not previously identified as a security
vulnerability.

All users running an affected release should either upgrade or use one of the
workarounds immediately.

Releases
--------
The fixed releases are available at the normal locations.

Workarounds
-----------
Upgrade to Rails 7.1.X, or configure caching proxies not to cache the
Set-Cookie headers.

Credits
-------

Thanks to [tyage](https://hackerone.com/tyage) for reporting this!

ReDoS based DoS vulnerability in Action Dispatch
There is a possible regular expression based DoS vulnerability in Action Dispatch related to the If-None-Match header. This vulnerability has been assigned the CVE identifier CVE-2023-22795. A specially crafted HTTP `If-None-Match` header can cause the regular expression engine to enter a state of catastrophic backtracking, when on a version of Ruby below 3.2.0. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately.

Improper Input Validation
A remote code execution vulnerability in development mode Rails can allow an attacker to guess the automatically generated development mode secret token. This secret token can be used in combination with other Rails internals to escalate to a remote code execution exploit.