[USN-4562-1] kramdown vulnerability

[Mike Salvatore]

==========================================================================
Ubuntu Security Notice USN-4562-1
September 30, 2020

ruby-kramdown vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

Summary:

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

Software Description:
- 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.

Update instructions:

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

Ubuntu 20.04 LTS:
  kramdown                        1.17.0-4ubuntu0.1
  ruby-kramdown                   1.17.0-4ubuntu0.1

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

References:
  https://usn.ubuntu.com/4562-1
  CVE-2020-14001

Package Information:
  https://launchpad.net/ubuntu/+source/ruby-kramdown/1.17.0-4ubuntu0.1