CVE-2020-36424: Medium severity mbed tls vulnerability

Published Jul 19, 2021
·
Updated

An issue was discovered in Arm Mbed TLS before 2.24.0. An attacker can recover a private key (for RSA or static Diffie-Hellman) via a side-channel attack against generation of base blinding/unblinding values.

Affected Software

4 affected components
Arm mbed TLS<2.7.17
Arm mbed TLS>=2.8.0<2.16.8
Arm mbed TLS>=2.17.0<2.24.0
Debian Debian Linux=10.0

Remediation

Event History

Jul 19, 2021
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Sep 3, 2025
Data Sourced
via Microsoft·09:53 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2020-36424.

2

What is the severity level of CVE-2020-36424?

The severity level of CVE-2020-36424 is medium.

3

Which software versions are affected by CVE-2020-36424?

Versions up to exclusive 2.7.17, between inclusive exclusive 2.8.0 and 2.16.8, and between inclusive exclusive 2.17.0 and 2.24.0 of Arm Mbed TLS are affected by CVE-2020-36424.

4

How can an attacker exploit CVE-2020-36424?

An attacker can exploit CVE-2020-36424 by performing a side-channel attack against the generation of base blinding/unblinding values to recover a private key (for RSA or static Diffie-Hellman).

5

How can I fix CVE-2020-36424?

To fix CVE-2020-36424, it is recommended to update Arm Mbed TLS to version 2.24.0 or later.

Contact

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