CVE-2020-36424

low-risk
Published 2021-07-19

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.

Do I need to act?

-
0.13% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.7/10 Medium
LOCAL / HIGH complexity

Affected Products (2)

Affected Vendors

Debian Arm

References (12)

Issue Tracking https://bugs.gentoo.org/740108
Release Notes https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
Release Notes https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
Release Notes https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
Mailing List https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
Vendor Advisory https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-...
Issue Tracking https://bugs.gentoo.org/740108
Release Notes https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
Release Notes https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
Release Notes https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
Mailing List https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
Vendor Advisory https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-...
20
/ 100
low-risk
Severity 12/34 · Low
Exploitability 1/34 · Minimal
Exposure 7/34 · Low