CVE-2020-36423

HIGH

Arm Mbed TLS < 2.23.0 - Cleartext Transmission of Sensitive Information via Lucky 13 Countermeasure Bypass

Title source: llm
STIX 2.1

Description

An issue was discovered in Arm Mbed TLS before 2.23.0. A remote attacker can recover plaintext because a certain Lucky 13 countermeasure doesn't properly consider the case of a hardware accelerator.

References (4)

Core 4
Core References
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
Issue Tracking, Patch, Third Party Advisory
https://bugs.gentoo.org/730752
Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7
Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0

Scores

CVSS v3 7.5
EPSS 0.0066
EPSS Percentile 71.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-319
Status published
Products (2)
arm/mbed_tls < 2.16.7
debian/debian_linux 10.0
Published Jul 19, 2021
Tracked Since Feb 18, 2026