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Ubuntu 20.04 LTS USN-6424-1 Moderate: Kramdown Code Execution Risk

ubuntu
Calendar Grey October 10, 2023
Dist Ubuntu Esm H88
Kramdown on Ubuntu 20.04 LTS could potentially run untrusted commands from malicious input. Ensure all packages are upgraded to protect systems.
kramdown could be made to execute arbitrary code if it received specially crafted input.

Summary

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

crafted input.

Software Description:

- 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.

Topics%20covered

Topics Covered

security advisory moderate update arbitrary code execution ubuntu ruby-kramdown

Update Instructions

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

Ubuntu 20.04 LTS:
   ruby-kramdown                   1.17.0-4ubuntu0.2

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

References

CVE-2021-28834

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6424-1

Topics%20covered

Topics Covered

security advisory moderate update arbitrary code execution ubuntu ruby-kramdown

Package Information

https://launchpad.net/ubuntu/+source/ruby-kramdown/1.17.0-4ubuntu0.2

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