Vulnerability Description
An issue was discovered in Espressif ESP-IDF 2.x, 3.0.x through 3.0.9, 3.1.x through 3.1.6, 3.2.x through 3.2.3, and 3.3.x through 3.3.1. An attacker who uses fault injection to physically disrupt the ESP32 CPU can bypass the Secure Boot digest verification at startup, and boot unverified code from flash. The fault injection attack does not disable the Flash Encryption feature, so if the ESP32 is configured with the recommended combination of Secure Boot and Flash Encryption, then the impact is minimized. If the ESP32 is configured without Flash Encryption then successful fault injection allows arbitrary code execution. To protect devices with Flash Encryption and Secure Boot enabled against this attack, a firmware change must be made to permanently enable Flash Encryption in the field if it is not already permanently enabled.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Espressif | Esp-Idf | >= 3.0, < 3.0.9 |
Related Weaknesses (CWE)
References
- https://www.espressif.com/en/news/Espressif_Security_Advisory_Concerning_Fault_IMitigationVendor Advisory
- https://www.espressif.com/en/news/Espressif_Security_Advisory_Concerning_Fault_IMitigationVendor Advisory
FAQ
What is CVE-2019-15894?
CVE-2019-15894 is a vulnerability with a CVSS score of 6.8 (MEDIUM). An issue was discovered in Espressif ESP-IDF 2.x, 3.0.x through 3.0.9, 3.1.x through 3.1.6, 3.2.x through 3.2.3, and 3.3.x through 3.3.1. An attacker who uses fault injection to physically disrupt the...
How severe is CVE-2019-15894?
CVE-2019-15894 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-15894?
Check the references section above for vendor advisories and patch information. Affected products include: Espressif Esp-Idf.