[Security] Bump rack from 1.5.2 to 1.5.5

[dependabot-preview]

Bumps rack from 1.5.2 to 1.5.5. This update includes a security fix.

Vulnerabilities fixed

Sourced from The Ruby Advisory Database.

Potential Denial of Service Vulnerability in Rack
Carefully crafted requests can cause a SystemStackError and potentially
cause a denial of service attack.

All users running an affected release should upgrade.

Patched versions: >= 1.6.2; ~> 1.5.4; ~> 1.4.6
Unaffected versions: none

Changelog

Sourced from rack's changelog.

Changelog

All notable changes to this project will be documented in this file. For info on how to format all future additions to this file please reference Keep A Changelog.

Unreleased

Note: There are many unreleased changes in Rack (master is around 300 commits ahead of 2-0-stable), and below is not an exhaustive list. If you would like to help out and document some of the unreleased changes, PRs are welcome.

Added

Changed

• Use Time#httpdate format for Expires, as proposed by RFC 7231. (@​nanaya)
• Make Utils.status_code raise an error when the status symbol is invalid instead of 500.
• Rename Request::SCHEME_WHITELIST to Request::ALLOWED_SCHEMES.
• Make Multipart::Parser.get_filename accept files with + in their name.
• Add Falcon to the default handler fallbacks. (@​ioquatix)
• Update codebase to avoid string mutations in preparation for frozen_string_literals. (@​pat)
• Change MockRequest#env_for to rely on the input optionally responding to #size instead of #length. (@​janko)
• Rename Rack::File -> Rack::Files and add deprecation notice. (@​postmodern).

Removed

Documentation

• Update broken example in Session::Abstract::ID documentation. (tonytonyjan)
• Add Padrino to the list of frameworks implmenting Rack. (@​wikimatze)
• Remove Mongrel from the suggested server options in the help output. (@​tricknotes)
• Replace HISTORY.md and NEWS.md with CHANGELOG.md. (@​twitnithegirl)
• Backfill CHANGELOG.md from 2.0.1 to 2.0.7 releases. (@​drenmi)

[2.0.7] - 2019-04-02

Fixed

• Remove calls to #eof? on Rack input in Multipart::Parser, as this breaks the specification. (@​matthewd)
• Preserve forwarded IP addresses for trusted proxy chains. (@​SamSaffron)

[2.0.6] - 2018-11-05

Fixed

• [CVE-2018-16470] Reduce buffer size of Multipart::Parser to avoid pathological parsing. (@​tenderlove)
• Fix a call to a non-existing method #accepts_html in the ShowExceptions middleware. (@​tomelm)
• [CVE-2018-16471] Whitelist HTTP and HTTPS schemes in Request#scheme to prevent a possible XSS attack. (@​PatrickTulskie)

[2.0.5] - 2018-04-23

Fixed

... (truncated)

Commits

• e7e0646 bump version
• 55db152 Merge pull request #814 from johnnaegle/only_increment_open_file_count_for_fi...
• 90e627a Explicitly fail when hitting the multipart limit
• 0d8bc9e bumping version
• 8e88a53 updating history
• fa15479 raise an exception if the parameters are too deep
• 14e139c use shasum
• 7255985 bumping to 1.5.3
• 99f725b updating OkJson due to CVE-2014-9490
• bf6dc2f Merge pull request #756 from filipegiusti/fix-large-posts
• Additional commits viewable in compare view

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