@storybook/addon-essentials version 5.3.17 is a minor release over its predecessor, version 5.3.15, both designed to enhance the Storybook development experience with a curated set of essential addons. The core functionality remains consistent, focusing on streamlining UI development and testing workflows. Both versions include dependencies like ts-dedent for cleaner template literals and core Storybook modules such as @storybook/api, @storybook/addons, @storybook/node-logger, @storybook/addon-viewport, and @storybook/addon-backgrounds. These dependencies collectively provide features like a unified API, an addon ecosystem, logging capabilities, viewport control for responsive design testing and customizable backgrounds for better visual context. The peer dependencies for both versions, including react, react-is, and babel-loader, ensure compatibility with common project setups.
Notably, the primary difference lies in the bug fixes, performance improvements, and potential dependency updates within the core Storybook modules included as dependencies. While the dependencies section might seem identical at first glance, the @storybook/* packages point to their respective versions (5.3.17 and 5.3.15), meaning version 5.3.17 benefits from any fixes or enhancements made to those individual packages between those releases. The release date also highlights a more recent update. This iterative update process ensures a more stable and refined toolkit for creating and showcasing UI components, making @storybook/addon-essentials a worthwhile addition to any Storybook project. While the file count and unpacked size are identical, the developer benefits from the cumulative effect of bug fixes and enhancements.
All the vulnerabilities related to the version 5.3.17 of the package
Cross site scripting in markdown-to-jsx
Versions of the package markdown-to-jsx before 7.4.0 are vulnerable to Cross-site Scripting (XSS) via the src property due to improper input sanitization. An attacker can execute arbitrary code by injecting a malicious iframe element in the markdown.
ReDOS vulnerabities: multiple grammars
The Regular expression Denial of Service (ReDoS) is a Denial of Service attack, that exploits the fact that most Regular Expression implementations may reach extreme situations that cause them to work very slowly (exponentially related to input size). An attacker can then cause a program using a Regular Expression to enter these extreme situations and then hang for a very long time.
If are you are using Highlight.js to highlight user-provided data you are possibly vulnerable. On the client-side (in a browser or Electron environment) risks could include lengthy freezes or crashes... On the server-side infinite freezes could occur... effectively preventing users from accessing your app or service (ie, Denial of Service).
This is an issue with grammars shipped with the parser (and potentially 3rd party grammars also), not the parser itself. If you are using Highlight.js with any of the following grammars you are vulnerable. If you are using highlightAuto to detect the language (and have any of these grammars registered) you are vulnerable. Exponential grammars (C, Perl, JavaScript) are auto-registered when using the common grammar subset/library require('highlight.js/lib/common') as of 10.4.0 - see https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@10.4.0/build/highlight.js
All versions prior to 10.4.1 are vulnerable, including version 9.18.5.
Grammars with exponential backtracking issues:
And of course any aliases of those languages have the same issue. ie: hpp is no safer than cpp.
Grammars with polynomial backtracking issues:
And again: any aliases of those languages have the same issue. ie: ruby and rb share the same ruby issues.
If you have any questions or comments about this advisory:
