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  5. CVE-2021-41104

CVE-2021-41104: Basic auth bypass in esphome

September 29, 2021 (updated September 20, 2024)

Anyone with web_server enabled and HTTP basic auth configured on 2021.9.1 or older

web_server allows OTA update without checking user defined basic auth username & password

References

  • github.com/advisories/GHSA-48mj-p7x2-5jfm
  • github.com/esphome/esphome
  • github.com/esphome/esphome/commit/2234f6aacf8cc653307fed80f3750317a82c4f83
  • github.com/esphome/esphome/commit/be965a60eba6bb769e2a5afdbc8eed132f077a59
  • github.com/esphome/esphome/pull/2409
  • github.com/esphome/esphome/releases/tag/2021.9.2
  • github.com/esphome/esphome/security/advisories/GHSA-48mj-p7x2-5jfm
  • github.com/pypa/advisory-database/tree/main/vulns/esphome/PYSEC-2021-351.yaml
  • nvd.nist.gov/vuln/detail/CVE-2021-41104

Code Behaviors & Features

Detect and mitigate CVE-2021-41104 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions before 2021.9.2

Fixed versions

  • 2021.9.2

Solution

Upgrade to version 2021.9.2 or above.

Impact 7.5 HIGH

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

Learn more about CVSS

Weakness

  • CWE-306: Missing Authentication for Critical Function

Source file

pypi/esphome/CVE-2021-41104.yml

Spotted a mistake? Edit the file on GitLab.

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