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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.6 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 0.41% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- lilypond/lilypond
- Source
- cve@mitre.org
References
- http://lilypond.org/doc/v2.18/Documentation/usage/command_002dline-usageRelease Notes
- https://gitlab.com/lilypond/lilypond/-/merge_requests/1522Patch, Vendor 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://phabricator.wikimedia.org/T259210Exploit, Third Party Advisory
- https://tracker.debian.org/news/1249694/accepted-lilypond-2221-1-source-into-unstable/Mailing List, Release Notes, Third Party Advisory
- https://www.mediawiki.org/wiki/Extension:Score/2021_security_advisoryThird Party Advisory
- http://lilypond.org/doc/v2.18/Documentation/usage/command_002dline-usageRelease Notes
- https://gitlab.com/lilypond/lilypond/-/merge_requests/1522Patch, Vendor 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://phabricator.wikimedia.org/T259210Exploit, Third Party Advisory
- https://tracker.debian.org/news/1249694/accepted-lilypond-2221-1-source-into-unstable/Mailing List, Release Notes, Third Party Advisory
- https://www.mediawiki.org/wiki/Extension:Score/2021_security_advisoryThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.