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Vulnerable Library - kramdown-1.17.0.gem

kramdown is yet-another-markdown-parser but fast, pure Ruby, using a strict syntax definition and supporting several common extensions.

Library home page: https://rubygems.org/gems/kramdown-1.17.0.gem

Dependency Hierarchy:

• octopress-minify-html-1.3.1.gem (Root Library)
  • jekyll-3.8.5.gem
    • ❌ kramdown-1.17.0.gem (Vulnerable Library)

Vulnerability Details

Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated.

Publish Date: 2021-03-19

URL: CVE-2021-28834

CVSS 3 Score Details (9.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

Suggested Fix

Type: Upgrade version

Release Date: 2021-03-19

Fix Resolution: 2.3.1

Vulnerable Library - json-2.2.0.gem

This is a JSON implementation as a Ruby extension in C.

Library home page: https://rubygems.org/gems/json-2.2.0.gem

Dependency Hierarchy:

• octopress-minify-html-1.3.1.gem (Root Library)
  • html_press-0.8.2.gem
    • multi_css-0.1.0.gem
      • css_press-0.3.2.gem
        • ❌ json-2.2.0.gem (Vulnerable Library)

Found in HEAD commit: 585742ad3f813b0bbb804a46fcb104ccab3adcd9

Vulnerability Details

The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent.

Publish Date: 2020-04-28

URL: CVE-2020-10663

CVSS 3 Score Details (7.5)

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: High
  • Availability Impact: None

Suggested Fix

Type: Upgrade version

Origin: https://www.ruby-lang.org/en/news/2020/03/19/json-dos-cve-2020-10663/

Release Date: 2020-04-28

Fix Resolution: 2.3.0

Vulnerable Library - kramdown-1.17.0.gem

kramdown is yet-another-markdown-parser but fast, pure Ruby, using a strict syntax definition and supporting several common extensions.

Library home page: https://rubygems.org/gems/kramdown-1.17.0.gem

Dependency Hierarchy:

• octopress-minify-html-1.3.1.gem (Root Library)
  • jekyll-3.8.5.gem
    • ❌ kramdown-1.17.0.gem (Vulnerable Library)

Vulnerability Details

The kramdown gem before 2.3.0 for Ruby processes the template option inside Kramdown documents by default, which allows unintended read access (such as template="/etc/passwd") or unintended embedded Ruby code execution (such as a string that begins with template="string://<%= `). NOTE: kramdown is used in Jekyll, GitLab Pages, GitHub Pages, and Thredded Forum.

Publish Date: 2020-07-17

URL: CVE-2020-14001

CVSS 3 Score Details (9.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14001

Release Date: 2020-07-17

Fix Resolution: kramdown - 2.3.0

Vulnerable Library - addressable-2.6.0.gem

Addressable is a replacement for the URI implementation that is part of Ruby's standard library. It more closely conforms to the relevant RFCs and adds support for IRIs and URI templates.

Library home page: https://rubygems.org/gems/addressable-2.6.0.gem

Dependency Hierarchy:

• octopress-minify-html-1.3.1.gem (Root Library)
  • jekyll-3.8.5.gem
    • ❌ addressable-2.6.0.gem (Vulnerable Library)

Vulnerability Details

Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. An uncontrolled resource consumption vulnerability exists after version 2.3.0 through version 2.7.0. Within the URI template implementation in Addressable, a maliciously crafted template may result in uncontrolled resource consumption, leading to denial of service when matched against a URI. In typical usage, templates would not normally be read from untrusted user input, but nonetheless, no previous security advisory for Addressable has cautioned against doing this. Users of the parsing capabilities in Addressable but not the URI template capabilities are unaffected. The vulnerability is patched in version 2.8.0. As a workaround, only create Template objects from trusted sources that have been validated not to produce catastrophic backtracking.

Publish Date: 2021-07-06

URL: CVE-2021-32740

CVSS 3 Score Details (7.5)

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

Suggested Fix

Type: Upgrade version

Origin: GHSA-jxhc-q857-3j6g

Release Date: 2021-07-06

Fix Resolution: addressable - 2.8.0