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CVE-2024-27281: RCE vulnerability with .rdoc_options in RDoc

High
I
Internet Bug Bounty
Submitted None

Team Summary

Official summary from Internet Bug Bounty

RDoc RCE vulnerability with .rdoc_options 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. Full GHSA: https://github.com/advisories/GHSA-592j-995h-p23j

Reported by ooooooo_q

Vulnerability Details

Technical details and impact analysis

I made a report at https://hackerone.com/reports/1187477 https://www.ruby-lang.org/en/news/2024/03/21/rce-rdoc-cve-2024-27281/ > 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. ## Impact RCE is possible when the `rdoc` command is executed for a repository received from the external.

Report Details

Additional information and metadata

State

Closed

Substate

Resolved

Bounty

$4860.00

Submitted