JTAG reactivation

Description

JTAG reactivation

CWE

CVE

Attack Surfaces

Debug Interface (MITRE EMB3D PID-15)

Attack Vectors

DFA

FA (MITRE EMB3D TID-105)

FIB (MITRE EMB3D TID-105)

Voltage Glitching

Laser Attack

Privileged Access Port (MITRE EMB3D TID-116)

HW Debug Memory Code Manipulation (MITRE EMB3D TID-119)

Defenses

Locked JTAG should not be able to be re-activated by the attacker using FIB modification with or without micro-probing, Multiple activation signals, Do not wire bond the JTAG pads of the IC unless this feature is really necessary.