Remote Code Execution (RCE) Affecting flavour_saver package, versions <0.3.3


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team

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  • Snyk ID SNYK-RUBY-FLAVOURSAVER-5457859
  • published 23 Apr 2023
  • disclosed 23 Apr 2023
  • credit Unknown

Introduced: 23 Apr 2023

CVE NOT AVAILABLE CWE-94 Open this link in a new tab

How to fix?

Upgrade flavour_saver to version 0.3.3 or higher.

Overview

Affected versions of this package are vulnerable to Remote Code Execution (RCE) in 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
Expand this section

Snyk

Recommended
9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High