@storybook/addon-essentials is a crucial package for Storybook users, providing a set of curated addons designed to enhance the development and testing experience. Version 5.3.19 builds upon the foundation laid by version 5.3.18, offering subtle but important updates. Examining the two versions reveals that the core dependencies remain largely identical: ts-dedent, @storybook/api, @storybook/addons, @storybook/node-logger, @storybook/addon-viewport, and @storybook/addon-backgrounds are all present. Notably, the dependent Storybook packages are aligned with their respective addon versions (e.g., @storybook/api@5.3.19 in @storybook/addon-essentials@5.3.19). The peer dependencies, including react, react-is, and babel-loader, remain consistent between the two versions, ensuring compatibility with existing projects.
The difference lies primarily in the internal updates within the Storybook ecosystem. The move from version 5.3.18 to 5.3.19 reflects a maintenance release containing bug fixes and performance improvements within the linked Storybook dependencies like @storybook/api and other core addons. While specific changes aren't itemized in this data, the update signifies a commitment to stability and refinement. For developers, upgrading to version 5.3.19 offers the advantage of benefiting from the latest enhancements and resolutions in the underlying Storybook components, contributing to a smoother and more reliable development workflow. The releaseDate difference indicates a more recent build and a more up-to-date release.
All the vulnerabilities related to the version 5.3.19 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:
