UBUNTU-CVE-2021-21900

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    UBUNTU-CVE-2021-21900

    Published: 19 Nov 2021Last Modified: 20 May 2026
    Upstream:
    CVE-2021-21900
    Aliases:
    USN-5957-1

    Summary:

    Details: A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An attacker can provide a malicious file to trigger this vulnerability.

    References: https://ubuntu.com/security/CVE-2021-21900, https://talosintelligence.com/vulnerability_reports/TALOS-2021-1351, https://github.com/LibreCAD/libdxfrw/commit/fcd977cc7f8f6cc7f012e5b72d33cf7d77b3fa69, https://ubuntu.com/security/notices/USN-5957-1, https://www.cve.org/CVERecord?id=CVE-2021-21900

    Affected packages

    Package

    Name: librecad

    Purl: pkg:deb/ubuntu/librecad?arch=source&distro=esm-apps%2Fxenial

    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
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