@storybook/addon-essentials version 5.3.10 introduces subtle but important updates compared to the previous stable version, 5.3.9, for developers enhancing their Storybook experience. Both versions focus on providing a curated set of add-ons designed to maximize the utility of Storybook. Core dependencies such as ts-dedent, @storybook/api, @storybook/addons, @storybook/node-logger, @storybook/addon-viewport, and @storybook/addon-backgrounds remain consistent, ensuring a familiar development environment. Similarly, developer dependencies like @types/jest and peer dependencies on react, react-is, and babel-loader are unchanged.
The key difference lies in the updated versions of the internal Storybook packages referenced as dependencies (e.g., @storybook/api, @storybook/addons). This suggests bug fixes, performance improvements, or minor feature enhancements within those core Storybook components are present in 5.3.10. The unpackedSize also sees a slight increase from 7007 to 7013, possibly indicating added code or assets related to these internal updates. For developers, upgrading to 5.3.10 ensures leveraging the latest refinements to these essential Storybook tools, promoting stability and potentially unlocking new capabilities or addressing existing issues within the Storybook ecosystem that were present in 5.3.9. Always review the changelog for the individual Storybook dependencies for a comprehensive understanding of the included changes.
All the vulnerabilities related to the version 5.3.10 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:
