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RDoc RCE vulnerability with .rdoc_options

Moderate severity GitHub Reviewed Published Mar 25, 2024 to the GitHub Advisory Database • Updated Aug 21, 2024

Package

bundler rdoc (RubyGems)

Affected versions

>= 6.4.0, < 6.4.1.1
>= 6.5.0, < 6.5.1.1
>= 6.6.0, < 6.6.3.1
>= 6.3.3, < 6.3.4.1

Patched versions

6.4.1.1
6.5.1.1
6.6.3.1
6.3.4.1

Description

An issue was discovered in RDoc 6.3.3 through 6.6.2, as distributed in Ruby 3.x through 3.3.0.

When parsing .rdoc_options (used for configuration in RDoc) as a YAML file, object injection and resultant remote code execution are possible because there are no restrictions on the classes that can be restored.

When loading the documentation cache, object injection and resultant remote code execution are also possible if there were a crafted cache.

We recommend to update the RDoc gem to version 6.6.3.1 or later. In order to ensure compatibility with bundled version in older Ruby series, you may update as follows instead:

  • For Ruby 3.0 users: Update to rdoc 6.3.4.1
  • For Ruby 3.1 users: Update to rdoc 6.4.1.1
  • For Ruby 3.2 users: Update to rdoc 6.5.1.1

You can use gem update rdoc to update it. If you are using bundler, please add gem "rdoc", ">= 6.6.3.1" to your Gemfile.

Note: 6.3.4, 6.4.1, 6.5.1 and 6.6.3 have a incorrect fix. We recommend to upgrade 6.3.4.1, 6.4.1.1, 6.5.1.1 and 6.6.3.1 instead of them.

References

Published to the GitHub Advisory Database Mar 25, 2024
Reviewed Mar 25, 2024
Published by the National Vulnerability Database May 14, 2024
Last updated Aug 21, 2024

Severity

Moderate

CVE ID

CVE-2024-27281

GHSA ID

GHSA-592j-995h-p23j

Source code

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