A deserialization of untrusted data vulnerability exists in rails < 5.2.4.3, rails < 6.0.3.1 which can allow an attacker to supply information can be inadvertently leaked fromStrong Parameters.

Affected: RubyGems: actionpack

There is a strong parameters bypass vector in ActionPack.

Versions Affected: rails <= 6.0.3 Not affected: rails < 5.0.0 Fixed Versions: rails >= 5.2.4.3, rails >= 6.0.3.1

Impact ------ In some cases user supplied information can be inadvertently leaked from Strong Parameters. Specifically the return value of `each`, or `each_value`, or `each_pair` will return the underlying "untrusted" hash of data that was read from the parameters. Applications that use this return value may be inadvertently use untrusted user input.

Impacted code will look something like this:

``` def update # Attacker has included the parameter: `{ is_admin: true }` User.update(clean_up_params) end

def clean_up_params params.each { |k, v| SomeModel.check(v) if k == :name } end ```

Note the mistaken use of `each` in the `clean_up_params` method in the above example.

Workarounds ----------- Do not use the return values of `each`, `each_value`, or `each_pair` in your application.

Security update for rubygem-actionpack-5_1

rubygem-rest-client: session fixation vulnerability Set-Cookie headers present in an HTTP 30x redirection responses rubygem-rest-client: unsanitized application logging foreman: Managing repositories with their id via hammer does not respect the role filters rack-protection: Timing attack in authenticity_token.rb rubygem-rack: hijack sessions by using timing attacks targeting the session id python-psutil: Double free because of refcount mishandling rubygem-activestorage: circumvention of file size limits in ActiveStorage rubygem-actionpack: possible strong parameters bypass rubygem-activesupport: potentially unintended unmarshalling of user-provided objects in MemCacheStore and RedisCacheStore rubygem-actionpack: ability to forge per-form CSRF tokens given a global CSRF token rubygem-actionview: CSRF vulnerability in rails-ujs rubygem-rails: untrusted users able to run pending migrations in production django: potential SQL injection via "tolerance" parameter in GIS functions and aggregates on Oracle netty: compression/decompression codecs don't enforce limits on buffer allocation sizes foreman: world-readable OMAPI secret through the ISC DHCP server rubygem-activeview: Cross-site scripting in translation helpers resteasy-client: potential sensitive information leakage in JAX-RS RESTEasy Client's WebApplicationException handling

Security update for rubygem-actionpack-5_1

Affected: Ubuntu:Pro:16.04:LTS: rails, Ubuntu:Pro:18.04:LTS: rails, Ubuntu:Pro:20.04:LTS: rails

A deserialization of untrusted data vulnerability exists in rails < 5.2.4.3, rails < 6.0.3.1 which can allow an attacker to supply information can be inadvertently leaked fromStrong Parameters.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Ruby on Rails ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Informationen offenzulegen, beliebigen Programmcode auszuführen oder Dateien zu manipulieren.