CVE-2020-36421

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

19/07/2021

Last modified:

03/12/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

5.30

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:arm:mbed_tls::::::::		2.16.7 (excluding)
cpe:2.3:a:arm:mbed_tls::::::::	2.17.0 (including)	2.23.0 (excluding)
cpe:2.3:o:debian:debian_linux:10.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2020-36421

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools