CVE-2021-24119: Medium severity mbed tls vulnerability

Published Jul 14, 2021
·
Updated

In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.

Affected Software

5 affected components
Arm mbed TLS<2.26.0
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Debian Debian Linux=9.0
Debian Debian Linux=10.0

Event History

Jul 14, 2021
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·01:15 PM
DescriptionSeverityWeaknessAffected Software
Sep 4, 2025
Data Sourced
via Microsoft·03:20 AM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is CVE-2021-24119?

CVE-2021-24119 is a side-channel vulnerability in base64 PEM file decoding in Trusted Firmware Mbed TLS 2.24.0.

2

Who is affected by CVE-2021-24119?

Users of ARM mbed TLS 2.24.0 up to 2.26.0 and Fedora 33, Fedora 34, Debian Linux 9.0, and Debian Linux 10.0 are affected.

3

How can an attacker exploit CVE-2021-24119?

An attacker with system-level access can use controlled-channel and side-channel attacks to obtain information about secret RSA keys.

4

What is the severity of CVE-2021-24119?

CVE-2021-24119 has a severity rating of 4.9 (medium).

5

Where can I find more information about CVE-2021-24119?

You can find more information about CVE-2021-24119 at the following references: [Link1], [Link2], [Link3].

Contact

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