@storybook/addon-essentials version 5.3.14 introduces subtle yet impactful refinements compared to its predecessor, version 5.3.13. Both versions, designed as a curated suite of addons aimed at enhancing the Storybook experience, share a common core of dependencies like ts-dedent, @storybook/api, @storybook/addons, @storybook/node-logger, @storybook/addon-viewport, and @storybook/addon-backgrounds, ensuring consistent functionality across the board. They also maintain identical peer dependencies on react, react-is, and babel-loader, indicating no breaking changes in core library requirements.
The key differences lie in the internal build and packaging. Version 5.3.14 sees a slight increase in the number of files included in the package (7 vs 6) and a corresponding increase in the unpacked size (7298 bytes vs 7013 bytes). This suggests potential additions, optimizations, or updates within the modules. While the core functionality remains aligned, developers might notice improvements in performance, bug fixes, or refined UI elements within the Storybook environment when upgrading. The updated release date of February 25, 2020, also sets it apart from the previous version released on February 12, 2020. Consider inspecting the commit log between these versions to learn more about what changed or running tests to ensure that there are no functional compatibility issues. This addon is vital for developers seeking a streamlined Storybook setup, providing essential tools for design and development workflows.
All the vulnerabilities related to the version 5.3.14 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:
