CVE-2024-29019 ESPHome vulnerable to Authentication bypass via Cross site request forgery
Attackers can bypass authentication and modify configuration files via CSRF, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2024-29019?
CVE-2024-29019 is a high-severity vulnerability in esphome, published on 21 Mar 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
ESPHome is a system to control microcontrollers remotely through Home Automation systems. API endpoints in dashboard component of ESPHome version 2023.12.9 (command line installation) are vulnerable to Cross-Site Request Forgery (CSRF) allowing remote attackers to carry out attacks against a logged user of the dashboard to perform operations on configuration files (create, edit, delete). It is possible for a malicious actor to create a specifically crafted web page that triggers a cross site request against ESPHome, this allows bypassing the authentication for API calls on the platform. This vulnerability allows bypassing authentication on API calls accessing configuration file operations on the behalf of a logged user. In order to trigger the vulnerability, the victim must visit a weaponized page. In addition to this, it is possible to chain this vulnerability with GHSA-9p43-hj5j-96h5/ CVE-2024-27287 to obtain a complete takeover of the user account. Version 2024.3.0 contains a patch for this issue.
Weakness: CWE-352
Which versions are affected by CVE-2024-29019?
3 open source packages ship an affected version, including esphome.
| Package | Affected | Fixed in |
|---|---|---|
esphome PyPI | From 2023.12.9 | 2024.3.0 |
esphome PyPI | From 2023.12.9 | 2024.3.0 |
esphome PyPI | From 2023.12.9 | 2024.3.0 |
How do I fix CVE-2024-29019?
Upgrade esphome to 2024.3.0 or later.
Is CVE-2024-29019 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-29019 exists.
Sources
Also known as GHSA-5925-88xh-6h99, PYSEC-2026-1327.