Amavis before 2.12.3 and 2.13.x before 2.13.1, in part because of its use of MIME-tools, has an Interpretation Conflict (relative to some mail user agents) when there are multiple boundary parameters in a MIME email message. Consequently, there can be an incorrect check for banned files or malware.
gitlab.com/amavis/amavis/-/issues/112
gitlab.com/amavis/amavis/-/raw/v2.13.1/README_FILES/README.CVE-2024-28054
lists.amavis.org/pipermail/amavis-users/2024-March/006811.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6J2MK2CS3KNJOS66QLW2MBJ4PIDLWJP5/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CDF6M3UXP45INVSWB4HXEDZH35CVZIJ4/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQQQQPTZ5JHXTUCYUXZHY6RZJ6VOGOAJ/
metacpan.org/pod/MIME::Tools
www.amavis.org/release-notes.txt