PRIOn knowledge basePRION:CVE-2020-17354Format string
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
lilypond.org/doc/v2.18/Documentation/usage/command_002dline-usage
gitlab.com/lilypond/lilypond/-/merge_requests/1522
lilypond.org/download.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K43PF6VGFJNNGAPY57BW3VMEFFOSMRLF/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ST5BLLQ4GDME3SN7UE5OMNE5GZE66X4Y/
phabricator.wikimedia.org/T259210
tracker.debian.org/news/1249694/accepted-lilypond-2221-1-source-into-unstable/
www.mediawiki.org/wiki/Extension:Score/2021_security_advisory
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