UBUNTU-CVE-2020-17354

    Dashboard / Vulnerabilities / UBUNTU-CVE-2020-17354

    UBUNTU-CVE-2020-17354

    Published: 15 Apr 2023Last Modified: 24 Oct 2025
    Upstream:
    CVE-2020-17354

    Summary:

    Details: LilyPond before 2.24 allows attackers to bypass the -dsafe protection mechanism via output-def-lookup or output-def-scope, as demonstrated by dangerous Scheme code in a .ly file that causes arbitrary code execution during conversion to a different file format. NOTE: in 2.24 and later versions, safe mode is removed, and the product no longer tries to block code execution when external files are used.

    References: https://ubuntu.com/security/CVE-2020-17354, https://phabricator.wikimedia.org/T259210, https://phabricator.wikimedia.org/T257062, https://www.mediawiki.org/wiki/Extension:Score/2021_security_advisory, https://www.cve.org/CVERecord?id=CVE-2020-17354

    Affected packages

    Package

    Name: lilypond

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.18.2-4
    2.18.2-4.1

    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-2020-17354 | CVE-DB