UBUNTU-CVE-2020-36425

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    UBUNTU-CVE-2020-36425

    Published: 19 Jul 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-36425

    Summary:

    Details: 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: https://ubuntu.com/security/CVE-2020-36425, 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://github.com/ARMmbed/mbedtls/pull/3433, https://bugs.gentoo.org/740108, https://www.cve.org/CVERecord?id=CVE-2020-36425

    Affected packages

    Package

    Name: mbedtls

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.1.2-1

    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
    UBUNTU-CVE-2020-36425 | CVE-DB