CVE-2020-36424
First published: Mon 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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 |
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Reference Links
- https://bugs.gentoo.org/740108
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-2
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2020-36424.
What is the severity level of CVE-2020-36424?
The severity level of CVE-2020-36424 is medium.
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.
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).
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.
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