High severity · published Mar 1, 2022
CVE-2021-43619
Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition. In the IPC model, a psa_fwu_write caller from SPE or NSPE can overwrite stack memory locations.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
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 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TF
Trusted Firmware-m · Trustedfirmware
1.4.0; 1.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43619
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43619
Vendor Advisory
https://developer.arm.com/support/arm-security-updates
Patch
https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/
Exploit
https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/fwu_write_vulnerability.html
Product
https://www.trustedfirmware.org
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