fix(deps): update dependency handlebars to v4.3.0 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
handlebars (source)	4.2.0 -> 4.3.0

GitHub Vulnerability Alerts

CVE-2019-19919

Versions of handlebars prior to 3.0.8 or 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution. Templates may alter an Objects' __proto__ and __defineGetter__ properties, which may allow an attacker to execute arbitrary code through crafted payloads.

Recommendation

Upgrade to version 3.0.8, 4.3.0 or later.

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Release Notes

handlebars-lang/handlebars.js (handlebars)

v4.3.0

Compare Source

Fixes:

• Security: Disallow calling "helperMissing" and "blockHelperMissing" directly - 2078c72
• Disallow calling "helperMissing" and "blockHelperMissing" directly - 2078c72

Features:

• Add new runtime option allowCallsToHelperMissing to allow calling blockHelperMissing and helperMissing.

Breaking changes:

Compatibility notes:

• Compiler revision increased - 06b7224

  • This means that template compiled with versions prior to 4.3.0 will not work with runtimes >= 4.3.0
    The increase was done because the "helperMissing" and "blockHelperMissing" are now moved from the helpers
    to the internal "container.hooks" object, so old templates will not be able to call them anymore. We suggest
    that you always recompile your templates with the latest compiler in your build pipelines.

• Disallow calling "helperMissing" and "blockHelperMissing" directly - 2078c72

  • Calling "helperMissing" and "blockHelperMissing" directly from a template (like in {{blockHelperMissing}} was
    never intended and was part of the exploits that have been revealed early in 20https://github.com/handlebars-lang/handlebars.js/issues/1495s.js/issues/1495). It is also part of a new exploit that
    is not captured by the earlier fix. In order to harden Handlebars against such exploits, calling thos helpers
    is now not possible anymore. Overriding those helpers is still possible.
  • If you really need this behavior, you can set the runtime option allowCallsToHelperMissing to true and the
    calls will again be possible

Both bullet points imly that Handlebars is not 100% percent compatible to 4.2.0, despite the minor version bump.

We consider it more important to resolve a major security issue than to maintain 100% compatibility.

Commits

v4.2.2

Compare Source

• Error message for syntax error missing location in 4.2.1+ (#​1562)

Commits

v4.2.1

Compare Source

Bugfixes:

• The "browser" property in the package.json has been updated to use the common-js builds instead of the minified UMD - c55a7be, #​1553

Compatibility notes:

• No compatibility issues should arise

Commits

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