CVE-2020-36425 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Reference

https://github.com/ARMmbed/mbedtls/pull/3433 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/issues/3340 https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17 https://bugs.gentoo.org/740108

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

5.3