Rack provides a minimal, modular and adaptable interface for developing
web applications in Ruby. By wrapping HTTP requests and responses in
the simplest way possible, it unifies and distills the API for web
servers, web frameworks, and software in between (the so-called
middleware) into a single method call.
Also see https://rack.github.io/.
There is a denial of service vulnerability in the header parsing component of Rack. Carefully crafted input can cause header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that parse headers using Rack (virtually all Rails applications) are impacted. The issue is fixed versions 2.2.6.4 and 3.0.6.1
CVE-2023-27539 - High Severity Vulnerability
Rack provides a minimal, modular and adaptable interface for developing web applications in Ruby. By wrapping HTTP requests and responses in the simplest way possible, it unifies and distills the API for web servers, web frameworks, and software in between (the so-called middleware) into a single method call. Also see https://rack.github.io/.
Library home page: https://rubygems.org/gems/rack-2.0.7.gem
Path to dependency file: /Gemfile.lock
Path to vulnerable library: /var/lib/gems/2.3.0/cache/rack-2.0.7.gem
Dependency Hierarchy: - web-console-4.0.1.gem (Root Library) - railties-6.0.1.gem - actionpack-6.0.1.gem - :x: **rack-2.0.7.gem** (Vulnerable Library)
Found in base branch: master
There is a denial of service vulnerability in the header parsing component of Rack. Carefully crafted input can cause header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that parse headers using Rack (virtually all Rails applications) are impacted. The issue is fixed versions 2.2.6.4 and 3.0.6.1
Publish Date: 2023-03-03
URL: CVE-2023-27539
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://discuss.rubyonrails.org/t/cve-2023-27539-possible-denial-of-service-vulnerability-in-racks-header-parsing/82466
Release Date: 2023-03-03
Fix Resolution: rack - 2.2.6.4,3.0.6.1
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