ubuntu-cve-2020-17354
Vulnerability from osv_ubuntu
Published
2023-04-15 22:15
Modified
2025-10-24 04:48
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.
Severity
8.6 (High)
8.6 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lilypond",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-data",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-cs",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-de",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-es",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-fr",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-hu",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-it",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-ja",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-nl",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-html-zh",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-pdf",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-pdf-de",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-pdf-es",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-pdf-fr",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-pdf-hu",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-pdf-it",
"binary_version": "2.18.2-4.1"
},
{
"binary_name": "lilypond-doc-pdf-nl",
"binary_version": "2.18.2-4.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "lilypond",
"purl": "pkg:deb/ubuntu/lilypond@2.18.2-4.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.18.2-4",
"2.18.2-4.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lilypond",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-data",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-cs",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-de",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-es",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-fr",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-hu",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-it",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-ja",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-nl",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-html-zh",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-pdf",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-pdf-de",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-pdf-es",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-pdf-fr",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-pdf-hu",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-pdf-it",
"binary_version": "2.18.2-12build1"
},
{
"binary_name": "lilypond-doc-pdf-nl",
"binary_version": "2.18.2-12build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "lilypond",
"purl": "pkg:deb/ubuntu/lilypond@2.18.2-12build1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.18.2-9",
"2.18.2-11",
"2.18.2-12",
"2.18.2-12build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lilypond",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-data",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-ca",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-cs",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-de",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-es",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-fr",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-hu",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-it",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-ja",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-nl",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-html-zh",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-pdf",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-pdf-ca",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-pdf-de",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-pdf-es",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-pdf-fr",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-pdf-hu",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-pdf-it",
"binary_version": "2.20.0-1"
},
{
"binary_name": "lilypond-doc-pdf-nl",
"binary_version": "2.20.0-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "lilypond",
"purl": "pkg:deb/ubuntu/lilypond@2.20.0-1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.19.81+really-2.18.2-13ubuntu1",
"2.19.81+really-2.18.2-13ubuntu2",
"2.19.81+really-2.18.2-14",
"2.20.0-1"
]
}
],
"aliases": [],
"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.",
"id": "UBUNTU-CVE-2020-17354",
"modified": "2025-10-24T04:48:38Z",
"published": "2023-04-15T22:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-17354"
},
{
"type": "REPORT",
"url": "https://phabricator.wikimedia.org/T259210"
},
{
"type": "REPORT",
"url": "https://phabricator.wikimedia.org/T257062"
},
{
"type": "REPORT",
"url": "https://www.mediawiki.org/wiki/Extension:Score/2021_security_advisory"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-17354"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2020-17354"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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