UBUNTU-CVE-2021-3565

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    UBUNTU-CVE-2021-3565

    Published: 4 Jun 2021Last Modified: 20 May 2026
    Upstream:
    CVE-2021-3565

    Summary:

    Details: A flaw was found in tpm2-tools in versions before 5.1.1 and before 4.3.2. tpm2_import used a fixed AES key for the inner wrapper, potentially allowing a MITM attacker to unwrap the inner portion and reveal the key being imported. The highest threat from this vulnerability is to data confidentiality.

    References: https://ubuntu.com/security/CVE-2021-3565, https://bugzilla.redhat.com/show_bug.cgi?id=1964427, https://github.com/tpm2-software/tpm2-tools/issues/2738, https://github.com/tpm2-software/tpm2-tools/commit/c069e4f179d5e6653a84fb236816c375dca82515, https://www.cve.org/CVERecord?id=CVE-2021-3565

    Affected packages

    Package

    Name: tpm2-tools

    Purl: pkg:deb/ubuntu/tpm2-tools?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.0.0+20160226.64b3334-0ubuntu1
    1.0.0+20160226.64b3334-0ubuntu2

    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-2021-3565 | CVE-DB