Exiv2 0.27.2 allows attackers to trigger a crash in Exiv2::getULong in types.cpp when called from Exiv2::Internal::CiffDirectory::readDirectory in crwimage_int.cpp, because there is no validation of the relationship of the total size to the offset and size.
https://usn.ubuntu.com/4159-1/
https://lists.debian.org/debian-lts-announce/2023/01/msg00004.html
https://lists.debian.org/debian-lts-announce/2019/12/msg00001.html