PT-2019-9549 · Texas Instruments · Tm4C+2

Published 2019-08-20 · Updated 2019-09-12 · CVE-2018-18056

Positive Technologies (AI Summary)

CVSS v2.0

2.1

Low

Base vector

AV:L/AC:L/Au:N/C:P/I:N/A:N

Name of the Vulnerable Software and Affected Versions Texas Instruments (TI) TM4C, MSP432E and MSP432P microcontroller series (affected versions not specified)

Description An issue in the Texas Instruments (TI) microcontroller series allows single-stepping and using breakpoints in eXecute-Only-Memory (XOM) protected flash memory. This enables executing single instructions with arbitrary system states and observing the resulting state changes. An attacker could exploit this by executing protected instructions with specific system states and observing the changes to reverse-engineer the instructions. The processor can be used as a kind of "instruction oracle" to gather information about unknown instructions.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2018-18056

Affected Products

Msp432E

Msp432P

Tm4C

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2018-18056 · Security Note
• https://usenix.org/conference/woot19/presentation/schink · Note
• https://usenix.org/system/files/woot19-paper_schink.pdf · Note