CVE-2024-40637: dbt core Injection — Exploit & Fix

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`.

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CVSS v3.1 Score

4.2

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-74 CWE-74

CWE-89 SQL Injection

Affected Products

Vendor	Product	Versions
getdbt	dbt_core	< 1.6.14
getdbt	dbt_core	1.7.0 — 1.7.14

References

Advisories & Patches

https://docs.getdbt.com/reference/global-configs/legacy-behaviors#behavior-change-flags https://github.com/dbt-labs/dbt-core/commit/3c82a0296d227cb1be295356df314c11716f4ff6 https://github.com/dbt-labs/dbt-core/commit/87ac4deb00cc9fe334706e42a365903a1d581624 https://github.com/dbt-labs/dbt-core/security/advisories/GHSA-p3f3-5ccg-83xq https://docs.getdbt.com/reference/global-configs/legacy-behaviors#behavior-change-flags https://github.com/dbt-labs/dbt-core/commit/3c82a0296d227cb1be295356df314c11716f4ff6 https://github.com/dbt-labs/dbt-core/commit/87ac4deb00cc9fe334706e42a365903a1d581624 https://github.com/dbt-labs/dbt-core/security/advisories/GHSA-p3f3-5ccg-83xq

Exploits

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 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

Other References

https://docs.getdbt.com/docs/build/packages https://docs.getdbt.com/docs/build/packages

Frequently Asked Questions

What is CVE-2024-40637? +

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`. It has a CVSS v3.1 base score of 4.2 (MEDIUM).

How severe is CVE-2024-40637? +

CVE-2024-40637 has a CVSS v3.1 score of 4.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-40637? +

CVE-2024-40637 affects products from getdbt, specifically: dbt_core. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-40637? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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