GHSA-w457-6q6x-cgp9
Prototype Pollution in handlebars
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | handlebars | >= 4.0.0, < 4.3.0 | 4.3.0 |
| RubyGems | bootstrap-wysihtml5-rails | >= 0.3.3.5, <= 0.3.3.8 | no fix listed |
| npm | handlebars | < 3.0.8 | 3.0.8 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2019-19919
- https://github.com/wycats/handlebars.js/issues/1558
- https://github.com/handlebars-lang/handlebars.js/commit/156061eb7707575293613d7fdf90e2bdaac029ee
- https://github.com/handlebars-lang/handlebars.js/commit/90ad8d97ad2933852fb83fcc054699dc99e094db
- https://github.com/wycats/handlebars.js/commit/2078c727c627f25d4a149962f05c1e069beb18bc
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19919
- https://github.com/Nerian/bootstrap-wysihtml5-rails/blob/master/vendor/assets/javascripts/bootstrap-wysihtml5/handlebars.runtime.min.js
- https://github.com/Nerian/bootstrap-wysihtml5-rails/tree/master/vendor/assets/javascripts/bootstrap-wysihtml5
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/bootstrap-wysihtml5-rails/CVE-2019-19919.yml
- https://github.com/wycats/handlebars.js
- https://www.tenable.com/security/tns-2021-14