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[Security] Bump json5 and @vue/cli-service in /frontend

Dependabot requested to merge dependabot-npm_and_yarn-frontend-json5-and-vue-cli-service-2.2.2 into master

Bumps json5 to 2.2.2 and updates ancestor dependency @vue/cli-service. These dependencies need to be updated together.

Updates json5 from 2.2.1 to 2.2.2 This update includes a security fix.

Vulnerabilities fixed

Prototype Pollution in JSON5 via Parse Method The parse method of the JSON5 library before and including version 2.2.1 does not restrict parsing of keys named __proto__, allowing specially crafted strings to pollute the prototype of the resulting object.

This vulnerability pollutes the prototype of the object returned by JSON5.parse and not the global Object prototype, which is the commonly understood definition of Prototype Pollution. However, polluting the prototype of a single object can have significant security impact for an application if the object is later used in trusted operations.

Impact

This vulnerability could allow an attacker to set arbitrary and unexpected keys on the object returned from JSON5.parse. The actual impact will depend on how applications utilize the returned object and how they filter unwanted keys, but could include denial of service, cross-site scripting, elevation of privilege, and in extreme cases, remote code execution.

Mitigation

This vulnerability is patched in json v2.2.2 and later.

Details

Suppose a developer wants to allow users and admins to perform some risky operation, but they want to restrict what non-admins can do. To accomplish this, they accept a JSON blob from the user, parse it using JSON5.parse, confirm that the provided data does not set some sensitive keys, and then performs the risky operation using the validated data:

const JSON5 = require('json5');
const doSomethingDangerous = (props) => {
if (props.isAdmin) {
console.log('Doing dangerous thing as admin.');
} else {
</tr></table>

... (truncated)

Patched versions: 2.2.2 Affected versions: < 2.2.2

Release notes

Sourced from json5's releases.

v2.2.2

  • Fix: Properties with the name __proto__ are added to objects and arrays. (#199) This also fixes a prototype pollution vulnerability reported by Jonathan Gregson! (#295).
Changelog

Sourced from json5's changelog.

v2.2.2 [code, diff]

  • Fix: Properties with the name __proto__ are added to objects and arrays. (#199) This also fixes a prototype pollution vulnerability reported by Jonathan Gregson! (#295).
Commits
  • 14f8cb1 2.2.2
  • 10cc7ca docs: update CHANGELOG for v2.2.2
  • 7774c10 fix: add proto to objects and arrays
  • edde30a Readme: slight tweak to intro
  • 97286f8 Improve example in readme
  • d720b4f Improve readme (e.g. explain JSON5 better!) (#291)
  • 910ce25 docs: fix spelling of Aseem
  • 2aab4dd test: require tap as t in cli tests
  • 6d42686 test: remove mocha syntax from tests
  • 4798b9d docs: update installation and usage for modules
  • Additional commits viewable in compare view

Updates @vue/cli-service from 5.0.8 to 5.0.8

Commits

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