Vulnerabilities > CVE-2020-17354 - Incorrect Authorization vulnerability in Lilypond
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH 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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://tracker.debian.org/news/1249694/accepted-lilypond-2221-1-source-into-unstable/
- https://phabricator.wikimedia.org/T259210
- https://www.mediawiki.org/wiki/Extension:Score/2021_security_advisory
- https://gitlab.com/lilypond/lilypond/-/merge_requests/1522
- http://lilypond.org/doc/v2.18/Documentation/usage/command_002dline-usage
- https://lilypond.org/download.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ST5BLLQ4GDME3SN7UE5OMNE5GZE66X4Y/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K43PF6VGFJNNGAPY57BW3VMEFFOSMRLF/