UBUNTU-CVE-2021-21899

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    UBUNTU-CVE-2021-21899

    Published: 19 Nov 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-21899
    Aliases:
    USN-5957-1

    Summary:

    Details: A code execution vulnerability exists in the dwgCompressor::copyCompBytes21 functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dwg file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

    References: https://ubuntu.com/security/CVE-2021-21899, https://talosintelligence.com/vulnerability_reports/TALOS-2021-1350, https://github.com/LibreCAD/libdxfrw/commit/6417118874333309aa10c4e59f954c3905a6e8b5, https://ubuntu.com/security/notices/USN-5957-1, https://www.cve.org/CVERecord?id=CVE-2021-21899

    Affected packages

    Package

    Name: librecad

    Purl: pkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0.9-2ubuntu0.1~esm1

    Affected versions

    2.0.4-1build1
    2.0.8-1
    2.0.9-2

    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