CVE-2020-36476

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    CVE-2020-36476

    Published: 23 Aug 2021Last Modified: 27 Aug 2026

    Summary:

    Details: An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before 2.7.17 LTS). There is missing zeroization of plaintext buffers in mbedtls_ssl_read to erase unused application data from memory.

    References: 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/releases/tag/v2.7.17, https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html, https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -7cd4d2dadb5fdc8410ee667f062646bd28f37e62

    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-2020-36476 | CVE-DB