[Snyk] Security upgrade rack from 2.2.3 to 2.2.3.1

[ekmixon]

Snyk has created this PR to fix 1 vulnerabilities in the rubygems dependencies of this project.

Snyk changed the following file(s):

• docs/serving/samples/hello-world/helloworld-ruby/Gemfile
• docs/serving/samples/hello-world/helloworld-ruby/Gemfile.lock

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Arbitrary Code Injection SNYK-RUBY-RACK-2848599	704

---

Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:
🧐 View latest project report
📜 Customise PR templates
🛠 Adjust project settings
📚 Read about Snyk's upgrade logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Arbitrary Code Injection

Summary by Sourcery

Bug Fixes:

• Upgrade rack gem to 2.2.3.1 to remediate a critical arbitrary code injection vulnerability in the hello-world sample

[secure-code-warrior-for-github]

Micro-Learning Topic: Code injection (Detected by phrase)

Matched on "Code Injection"

What is this? (2min video)

Code injection happens when an application insecurely accepts input that is subsequently used in a dynamic code evaluation call. If insufficient validation or sanitisation is performed on the input, specially crafted inputs may be able to alter the syntax of the evaluated code and thus alter execution. In a worst case scenario, an attacker could run arbitrary code in the server context and thus perform almost any action on the application server.

Try a challenge in Secure Code Warrior

Helpful references

• OWASP Command Injection - OWASP community page with comprehensive information about Code Injection, and links to various OWASP resources to help detect or prevent it.
• SEI CERT Oracle Coding Standard for Java - Prevent Code Injection - Carnegie Mellon University Software Engineering Institute guidance on preventing code injection vulnerabilities in Java.

[sourcery-ai]

Reviewer's Guide

This PR updates the rack dependency in the hello-world Ruby sample to version 2.2.3.1 and regenerates the lockfile to fix a critical arbitrary code injection vulnerability.

File-Level Changes

Change	Details	Files
Upgrade rack gem to 2.2.3.1 to remediate an arbitrary code injection vulnerability	Update rack version constraint in Gemfile Regenerate Gemfile.lock to include the new rack version	docs/serving/samples/hello-world/helloworld-ruby/Gemfile docs/serving/samples/hello-world/helloworld-ruby/Gemfile.lock

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.