1. Ubuntu Security Notices
  2. USN-4562-1

USN-4562-1: kramdown vulnerability

Publication date

30 September 2020

Overview

kramdown could be made to crash, run programs, or leak sensitive information if it opened a specially crafted file.

Releases

Packages

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

Details

It was discovered that kramdown insecurely handled certain crafted input.
An attacker could use this vulnerability to read restricted files or
execute arbitrary code.

It was discovered that kramdown insecurely handled certain crafted input.
An attacker could use this vulnerability to read restricted files or
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 kramdown –  1.17.0-4ubuntu0.1
ruby-kramdown –  1.17.0-4ubuntu0.1

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References

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