Arbitrary Command Execution Affecting flavour_saver package, versions < 0.3.3


Severity

Recommended
0.0
medium
0
10

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  • 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 Base Scores

version 3.1