Vulnerability Details CVE-2021-41104
ESPHome is a system to control the ESP8266/ESP32. Anyone with web_server enabled and HTTP basic auth configured on version 2021.9.1 or older is vulnerable to an issue in which `web_server` allows over-the-air (OTA) updates without checking user defined basic auth username & password. This issue is patched in version 2021.9.2. As a workaround, one may disable or remove `web_server`.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 51.4%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 4.3
References
- https://github.com/esphome/esphome/pull/2409/commits/207cde1667d8c799a197b78ca8a5a14de8d5ca1e
- https://github.com/esphome/esphome/releases/tag/2021.9.2
- https://github.com/esphome/esphome/security/advisories/GHSA-48mj-p7x2-5jfm
- https://github.com/esphome/esphome/pull/2409/commits/207cde1667d8c799a197b78ca8a5a14de8d5ca1e
- https://github.com/esphome/esphome/releases/tag/2021.9.2
- https://github.com/esphome/esphome/security/advisories/GHSA-48mj-p7x2-5jfm
Products affected by CVE-2021-41104
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cpe:2.3:h:espressif:esp32:-
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cpe:2.3:h:espressif:esp8266:-
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cpe:2.3:o:esphome:esphome_firmware:-
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cpe:2.3:o:esphome:esphome_firmware:2021.9.1