@storybook/addon-essentials version 5.3.18 offers a subtle but crucial update over its predecessor, version 5.3.17. Both curated addon packages aim to simplify and enhance the Storybook development experience by providing essential tools right out of the box. Developers leveraging Storybook for UI component development will find these addons invaluable for tasks like controlling the viewport, managing background customization, and simplifying API interactions within Storybook.
The core functionality, dependencies like ts-dedent, @storybook/api, @storybook/addons, @storybook/node-logger, @storybook/addon-viewport, and @storybook/addon-backgrounds, remain consistent between versions, indicating a focus on stability and incremental improvements. Version 5.3.18 bumps the dependency versions of @storybook/api, @storybook/addons, @storybook/node-logger, @storybook/addon-viewport, and @storybook/addon-backgrounds to 5.3.18 to match the core package, bringing in bug fixes and improvements. The core peer dependencies (react, react-is, and babel-loader) remain unchanged, ensuring compatibility with existing project setups.
While the file count and unpacked size suggest minimal structural changes, the update to version 5.3.18, released on March 31, 2020, likely incorporates internal bug fixes or performance enhancements within the dependent Storybook packages. Developers already using @storybook/addon-essentials should consider upgrading to 5.3.18 to benefit from the latest refinements and maintain consistency across their Storybook environment, ensuring a smoother and more reliable development workflow.
All the vulnerabilities related to the version 5.3.18 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:
