CVE-2018-18056
Texas Instruments TM4C, MSP432E, and MSP432P Microcontrollers XOM-Protected Flash Memory Instruction Oracle Vulnerability
Description
An issue was discovered in the Texas Instruments (TI) TM4C, MSP432E and MSP432P microcontroller series. The eXecute-Only-Memory (XOM) implementation prevents code read-outs on protected memory by generating bus faults. However, single-stepping and using breakpoints is allowed in XOM-protected flash memory. As a consequence, it is possible to execute single instructions with arbitrary system states (e.g., registers, status flags, and SRAM content) and observe the state changes produced by the unknown instruction. An attacker could exploit this vulnerability by executing protected and unknown instructions with specific system states and observing the state changes. Based on the gathered information, it is possible to reverse-engineer the executed instructions. The processor acts as a kind of "instruction oracle."
INFO
Published Date :
Aug. 20, 2019, 5:15 p.m.
Last Modified :
Sept. 12, 2019, 6:15 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
0.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-18056.
| URL | Resource |
|---|---|
| https://www.usenix.org/conference/woot19/presentation/schink | Technical Description Third Party Advisory |
| https://www.usenix.org/system/files/woot19-paper_schink.pdf | Technical Description Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-18056 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-18056 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Aug. 30, 2019
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3 AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://www.usenix.org/conference/woot19/presentation/schink No Types Assigned https://www.usenix.org/conference/woot19/presentation/schink Technical Description, Third Party Advisory Changed Reference Type https://www.usenix.org/system/files/woot19-paper_schink.pdf No Types Assigned https://www.usenix.org/system/files/woot19-paper_schink.pdf Technical Description, Third Party Advisory Added CWE CWE-200 Added CPE Configuration AND OR *cpe:2.3:o:ti:tm4c123_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:ti:tm4c123:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ti:tm4c129_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:ti:tm4c129:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 29, 2019
Action Type Old Value New Value Added Reference https://www.usenix.org/conference/woot19/presentation/schink [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-18056 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-18056
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} 0.00%
score
0.30074
percentile