PT-2022-11874 · Unknown · Trusted Firmware-M

Published 2022-03-01 · Updated 2024-11-27 · CVE-2021-43619

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Trusted Firmware M versions 1.4.x through 1.4.1

Description The issue is a buffer overflow in the Firmware Update partition. In the IPC model, a psa fwu write caller from SPE or NSPE can overwrite stack memory locations.

Recommendations For Trusted Firmware M versions 1.4.x through 1.4.1, consider disabling the psa fwu write caller from SPE or NSPE as a temporary workaround until a patch is available. Restrict access to the Firmware Update partition to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2021-43619

Affected Products

Trusted Firmware-M

References · 8

• 🔥 https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/fwu_write_vulnerability.html · Exploit
• https://osv.dev/vulnerability/CVE-2021-43619 · Vendor Advisory
• https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-43619 · Security Note
• https://developer.arm.com/support/arm-security-updates · Vendor Advisory
• https://t.me/cibsecurity/38240 · Telegram Post
• https://t.me/cvenotify/102656 · Telegram Post
• https://trustedfirmware.org · Note