CVE-2021-3623

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    CVE-2021-3623

    Published: 2 Mar 2022Last Modified: 8 Jul 2026

    Summary:

    Details: A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system availability.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7KZSYMTE7Z4BBEZUWO2DIMQDWMGEP46/, https://github.com/stefanberger/libtpms/pull/223, https://bugzilla.redhat.com/show_bug.cgi?id=1976806, https://github.com/stefanberger/libtpms/commit/2e6173c, https://github.com/stefanberger/libtpms/commit/2f30d62, https://github.com/stefanberger/libtpms/commit/7981d9a

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -bc59931b2b4c6abb7678e7f1a44be9d1dd0fc06d

    Affected versions

    v0.6.4
    v0.6.3
    v0.6.2
    v0.6.1
    v0.6.0

    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-2021-3623 | CVE-DB