build(deps): [security] bump handlebars from 4.0.12 to 4.1.2

[dependabot-preview]

Bumps handlebars from 4.0.12 to 4.1.2. This update includes a security fix.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Prototype Pollution in handlebars Versions of handlebars prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects' prototype, thus allowing an attacker to execute arbitrary code on the server.

Recommendation

For handlebars 4.1.x upgrade to 4.1.2 or later. For handlebars 4.0.x upgrade to 4.0.14 or later.

Affected versions: >= 4.0.0 < 4.0.14

Changelog

Sourced from handlebars's changelog.

v4.1.2 - April 13th, 2019

Chore/Test:

• #1515 - Port over linting and test for typings (@zimmi88)
• chore: add missing typescript dependency, add package-lock.json - 594f1e3
• test: remove safari from saucelabs - 871accc

Bugfixes:

• fix: prevent RCE through the "lookup"-helper - cd38583

Compatibility notes:

Access to the constructor of a class thought {{lookup obj "constructor" }} is now prohibited. This closes a leak that only half closed in versions 4.0.13 and 4.1.0, but it is a slight incompatibility.

This kind of access is not the intended use of Handlebars and leads to the vulnerability described in #1495. We will not increase the major version, because such use is not intended or documented, and because of the potential impact of the issue (we fear that most people won't use a new major version and the issue may not be resolved on many systems).

Commits

v4.1.1 - March 16th, 2019

Bugfixes:

• fix: add "runtime.d.ts" to allow "require('handlebars/runtime')" in TypeScript - 5cedd62

Refactorings:

• replace "async" with "neo-async" - 048f2ce
• use "substring"-function instead of "substr" - 445ae12

Compatibility notes:

• This is a bugfix release. There are no breaking change and no new features.

Commits

v4.1.0 - February 7th, 2019

New Features

• import TypeScript typings - 27ac1ee

Security fixes:

• disallow access to the constructor in templates to prevent RCE - 42841c4, #1495

Commits

• 10b5fcf v4.1.2
• dd0144c Update release notes
• 594f1e3 chore: add missing typescript dependency, add package-lock.json
• 871accc test: remove safari from saucelabs
• cd38583 fix: prevent RCE through the "lookup"-helper
• c454d94 Merge pull request #1515 from zimmi88/4.x-typings-lint
• 9cfb5dd Merge pull request #1516 from phil-davis/revert-double-release-notes
• be44246 Remove triplicate of v4.0.12 release notes
• 002561b Revert "Update release notes"
• 3fb6687 Port over linting and test for typings
• Additional commits viewable in compare view

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