Information Exposure Affecting gatsby-plugin-mdx package, versions <5.10.0
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Test your applications- Snyk ID SNYK-JS-GATSBYPLUGINMDX-5671902
- published 8 Jun 2023
- disclosed 8 Jun 2023
- credit Maxwell Garrett
Introduced: 8 Jun 2023
CVE-2023-34238 Open this link in a new tabHow to fix?
Upgrade gatsby-plugin-mdx to version 5.10.0 or higher.
Overview
gatsby-plugin-mdx is a MDX integration for Gatsby
Affected versions of this package are vulnerable to Information Exposure via local file inclusion in __file-code-frame or __original-stack-frame, when gatsby develop is in use and exposed to the internet.
NOTE: By default gatsby develop is only accessible via the localhost 127.0.0.1, and one would need to intentionally expose the server to other interfaces to exploit this vulnerability by using server options such as --host 0.0.0.0, -H 0.0.0.0, or the GATSBY_HOST=0.0.0.0 environment variable.
PoC
# Local File Inclusion in __file-code-frame
$ curl "http://127.0.0.1:8000/__file-code-frame?filePath=/etc/passwd&lineNumber=1"
# Local File Inclusion in __original-stack-frame
$ curl "http://127.0.0.1:8000/__original-stack-frame?moduleId=/etc/hosts&lineNumber=1&skipSourceMap=1"