UBUNTU-CVE-2023-4692

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    UBUNTU-CVE-2023-4692

    Published: 3 Oct 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2023-4692
    Aliases:
    USN-6410-1

    Summary:

    Details: An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.

    References: https://ubuntu.com/security/CVE-2023-4692, https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html, https://ubuntu.com/security/notices/USN-6410-1, https://www.cve.org/CVERecord?id=CVE-2023-4692

    Affected packages

    Package

    Name: grub2-signed

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.22

    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-2023-4692 | CVE-DB