CVE-2020-36425

MEDIUM

Arm Mbed TLS < 2.24.0 - Improper Certificate Validation via CRL RevocationDate Check

Title source: llm
STIX 2.1

Description

An issue was discovered in Arm Mbed TLS before 2.24.0. It incorrectly uses a revocationDate check when deciding whether to honor certificate revocation via a CRL. In some situations, an attacker can exploit this by changing the local clock.

References (7)

Core 7
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/740108
Exploit, Issue Tracking, Third Party Advisory
https://github.com/ARMmbed/mbedtls/issues/3340
Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17

Scores

CVSS v3 5.3
EPSS 0.0059
EPSS Percentile 69.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Details

CWE
CWE-295
Status published
Products (2)
arm/mbed_tls < 2.7.17
debian/debian_linux 10.0
Published Jul 19, 2021
Tracked Since Feb 18, 2026