Arbitrary Command Execution Affecting flavour_saver package, versions < 0.3.3


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Arbitrary Command Execution vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-RUBY-FLAVOURSAVER-20194
  • published3 Sept 2014
  • disclosed3 Sept 2014
  • creditUnknown

Introduced: 3 Sep 2014

CVE NOT AVAILABLE CWE-77  (opens in a new tab)

Overview

FlavourSaver is a pure-ruby implementation of the Handlebars templating language. Affected versions of this gem are vulnerable to arbitrary command execution via the helper method dispatch where it uses Kernel::send to call helpers without checking that they are defined within the template context first. This allows expressions such as {{system "ls"}} or {{eval "puts 1 + 1"}} to be executed.

CVSS Scores

version 3.1