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lilypond — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2020-17354

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.

Products
lilypond
Affected versions
Not specified
Fixed versions
2.22.1-1
CVEs
CVE-2020-17354
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 12:44 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-17354

core-osv · Original source

Published 15 Apr 2023, 22:15 UTC

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.

osv:DEBIAN-CVE-2020-17354

lilypond

Fixed versions: 2.22.1-1

lilypond

Fixed versions: 2.22.1-1

lilypond

Fixed versions: 2.22.1-1

Complete source record
{
  "id": "1985ec4aad6338fc5ff00522d5c93d7013f3a485b0752ed2ed50a6252b41a337",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-17354",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-17354",
    "summary": "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.",
    "evidence": "osv:DEBIAN-CVE-2020-17354",
    "products": [
      {
        "name": {
          "value": "lilypond",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.22.1-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "lilypond",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.22.1-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "lilypond",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.22.1-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2020-17354",
      "aliases": [
        "DEBIAN-CVE-2020-17354"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.22.1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "lilypond",
            "purl": "pkg:deb/debian/lilypond?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17354.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.22.1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "lilypond",
            "purl": "pkg:deb/debian/lilypond?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17354.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.22.1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "lilypond",
            "purl": "pkg:deb/debian/lilypond?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17354.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T12:00:46.510415781Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-17354"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-17354"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-17354",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 451317,
  "published_at": "2023-04-15T22:15:06.913+00:00"
}