CVE-2020-36421 Information

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.

CVSS Vector

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

Reference

https://github.com/ARMmbed/mbedtls/issues/3394 https://bugs.gentoo.org/730752 https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0 https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3