Home/CVE/LilyPond before 2.24 allows attackers to bypass the -dsafe protection mechanism via output-def-lookup or output-def-scop
CVE

CVE-2020-17354

LilyPond before 2.24 allows attackers to bypass the -dsafe protection mechanism via output-def-lookup or output-def-scop

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.

HIGH · CVSS 8.6 EPSS 0.00064
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-863Incorrect Authorization
CWE-863Incorrect Authorization
▤

Affected Products & Versions

1
lilypond< 2.24.0
⚠

Public Exploits & PoCs

1
pocphabricator.wikimedia.org · T259210phabricator.wikimedia.org
▣

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 Apr 2023 · 10:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2023:0137-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lilypond.org/doc/v2.18/Documentation/usage/command_002dline-usageRelease Notes
https://gitlab.com/lilypond/lilypond/-/merge_requests/1522PatchVendor Advisory
https://lilypond.org/download.htmlProduct
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/
https://tracker.debian.org/news/1249694/accepted-lilypond-2221-1-source-into-unstable/Mailing ListRelease NotesThird Party Advisory
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