CVE-2020-36421

5.3 MEDIUM

Published: July 19, 2021 Modified: December 03, 2025

Description

An issue was discovered in Arm Mbed TLS before 2.23.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://bugs.gentoo.org/730752

Source: cve@mitre.org

Issue Tracking Patch Third Party Advisory

https://github.com/ARMmbed/mbedtls/issues/3394

Source: cve@mitre.org

Exploit Issue Tracking Third Party Advisory

https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7

Source: cve@mitre.org

Release Notes Third Party Advisory

https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0

Source: cve@mitre.org

Release Notes Third Party Advisory

https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html

Source: cve@mitre.org

Mailing List Third Party Advisory

https://bugs.gentoo.org/730752