CVE-2020-36421

State: Published
Severity: 5.3 Medium
Published: Jul 19, 2021
Updated: Dec 3, 2025
Reserved: Jul 19, 2021

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.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-203 Observable Discrepancy

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7
https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0
https://github.com/ARMmbed/mbedtls/issues/3394
https://bugs.gentoo.org/730752
[debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security updatemailing-list

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