CVE-2020-17354

    Dashboard / Vulnerabilities / CVE-2020-17354

    CVE-2020-17354

    Published: 15 Apr 2023Last Modified: 9 Jul 2026

    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://lilypond.org/download.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K43PF6VGFJNNGAPY57BW3VMEFFOSMRLF/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ST5BLLQ4GDME3SN7UE5OMNE5GZE66X4Y/, http://lilypond.org/doc/v2.18/Documentation/usage/command_002dline-usage, https://tracker.debian.org/news/1249694/accepted-lilypond-2221-1-source-into-unstable/, https://www.mediawiki.org/wiki/Extension:Score/2021_security_advisory, https://gitlab.com/lilypond/lilypond/-/merge_requests/1522, https://phabricator.wikimedia.org/T259210

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -8b6ece6ad261c2e3d87dd66f0eee645cc1e56b81

    Affected versions

    v2.23.82
    v2.23.81
    v2.23.80

    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-2020-17354 | CVE-DB