Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWNtaDUtcWM4dy14dmNx

Cross-Site Scripting in i18next

Affected versions of i18next may fail to sanitize user input when certain configuration options are used. When using the .init method, passing interpolation options without passing an escapeValue will default to undefined rather than the assumed true.

Proof of Concept

var init = i18n.init({
  interpolation: {
    prefix: "__",
    suffix: "__",
    escapeValue: true
  }
}, function(){
  var test = i18n.t('__firstName__ __lastName__', {
        firstName: 'Bob',
        lastName: '["foo","bar"]',
  });
  console.log(test);
});

When escapeValue is explicitly passed, the result of test is:

<script>alert(1)</script> Johnson

This is supposed to be the default. However, if escapeValue is not included, the result is the unescaped string:

<script>alert(1)</script> Johnson

Recommendation

Update to version 3.4.4 or later.

Permalink: https://github.com/advisories/GHSA-cmh5-qc8w-xvcq
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWNtaDUtcWM4dy14dmNx
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 6 years ago
Updated: 8 months ago

CVSS Score: 6.1
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Identifiers: GHSA-cmh5-qc8w-xvcq, CVE-2017-16010
References:

• https://nvd.nist.gov/vuln/detail/CVE-2017-16010
• https://github.com/i18next/i18next/pull/826
• https://github.com/advisories/GHSA-cmh5-qc8w-xvcq
• https://www.npmjs.com/advisories/326

Repository: https://github.com/i18next/i18next
Blast Radius: 28.7

Affected Packages