CVE-2020-36422

    Dashboard / Vulnerabilities / CVE-2020-36422

    CVE-2020-36422

    Published: 19 Jul 2021Last Modified: 27 Aug 2026

    Summary:

    Details: An issue was discovered in Arm Mbed TLS before 2.23.0. A side channel allows recovery of an ECC private key, related to mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul, and mbedtls_ecp_mul_restartable.

    References: https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7, https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0, https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html, https://bugs.gentoo.org/730752

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -abc460236f17be148036e2c7e07e6a05f938b656

    Affected versions

    mbedtls-2.19.1
    mbedtls-2.19.0d2
    mbedtls-2.19.0
    mbedtls-2.19.0d1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2020-36422 | CVE-DB