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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2019-10-07T15:54:40

Updated: 2024-08-05T01:03:32.584Z

Reserved: 2019-09-03T00:00:00

Link: CVE-2019-15894

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2019-10-07T16:15:11.413

Modified: 2020-08-24T17:37:01.140

Link: CVE-2019-15894

cve-icon Redhat

No data.