CVE-2023-43787

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    CVE-2023-43787

    Published: 10 Oct 2023Last Modified: 23 Sept 2026

    Summary: Libx11: integer overflow in xcreateimage() leading to a heap overflow

    Details: A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges.

    References: http://www.openwall.com/lists/oss-security/2024/01/24/9, https://access.redhat.com/downloads/content/package-browser/, https://lists.debian.org/debian-lts-announce/2023/10/msg00005.html, https://access.redhat.com/errata/RHSA-2024:2145, https://access.redhat.com/errata/RHSA-2024:2973, https://access.redhat.com/security/cve/CVE-2023-43787, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43787.json, https://nvd.nist.gov/vuln/detail/CVE-2023-43787, https://security.netapp.com/advisory/ntap-20231103-0006/, https://bugzilla.redhat.com/show_bug.cgi?id=2242254, https://gitlab.freedesktop.org/xorg/lib/libx11, https://jfrog.com/blog/xorg-libx11-vulns-cve-2023-43786-cve-2023-43787-part-two/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -c745719e23af44a4b40ab4508447637b35d91a1e

    Affected versions

    libX11-1.8.6
    libX11-1.8.5
    libX11-1.8.4
    libX11-1.8.3
    libX11-1.8.2
    libX11-1.8.1
    libX11-1.8

    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-2023-43787 | CVE-DB