Medium severity · published Sep 24, 2019
CVE-2019-14239
On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protection method for execute-only access) can be defeated by leveraging a…
6.6
CVSS
0.4%
EPSS
No
On KEV
Description
On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protection method for execute-only access) can be defeated by leveraging a load instruction inside the execute-only region to expose the protected code into a CPU register.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KK
Kinetis K8x Firmware · Nxp
All versions, or not specified · source: NVD
KK
Kinetis Kv1x Firmware · Nxp
All versions, or not specified · source: NVD
KK
Kinetis Kv3x Firmware · Nxp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-14239
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-14239
Exploit
https://www.usenix.org/conference/woot19/presentation/schink
Exploit
https://www.usenix.org/system/files/woot19-paper_schink.pdf
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CVE-2019-14237
On NXP Kinetis KV1x, Kinetis KV3x, and Kinetis K8x devices, Flash Access Controls (FAC) (a software IP protection method for execute-only access) can be defeated by observing CPU…