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Advisories

Tasmota 16.0.0 CSRF via Referer Header Validation Bypass

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Severity
high
Date
Affecting

  • Tasmota <= 16.0.0

CWE
  • CWE-352 Cross-Site Request Forgery (CSRF)
CVSS
7.5
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
Credit
Abdurakhmonov Ulugbek
Description
Tasmota through 16.0.0, fixed in commit 1cb7ebc, contains a cross-site request forgery vulnerability that allows unauthenticated attackers to bypass Referer-based CSRF protection in HttpCheckPriviledgedAccess() by crafting a Referer header where the device hostname or IP appears as a substring immediately after http://.evil.com/. Attackers can lure an administrator on the device's network to a malicious page to issue arbitrary console commands and reconfigure Wi-Fi, MQTT, settings, or firmware on devices lacking a WebPassword.

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