1. Ubuntu Security Notices
  2. USN-6424-1

USN-6424-1: kramdown vulnerability

Publication date

10 October 2023

Overview

kramdown could be made to execute arbitrary code if it received specially crafted input.

Releases

Packages

  • ruby-kramdown - Fast, pure-Ruby Markdown-superset converter - ruby library

Details

It was discovered that kramdown did not restrict Rouge formatters to the
correct namespace. An attacker could use this issue to cause kramdown to
execute arbitrary code.

It was discovered that kramdown did not restrict Rouge formatters to the
correct namespace. An attacker could use this issue to cause kramdown to
execute arbitrary code.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.04 focal ruby-kramdown –  1.17.0-4ubuntu0.2

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References

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