A PngChunk::parseChunkContent uncontrolled memory allocation in Exiv2 through 0.27.1 allows an attacker to cause a denial of service (crash due to an std::bad_alloc exception) via a crafted PNG image file.Referenceshttps://github.com/Exiv2/exiv2/issues/845https://github.com/Exiv2/exiv2/pull/846https://usn.ubuntu.com/4056-1/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGBT5OD2TF4AIXJUC56WOUJRHAZLZ4DC/https://lists.debian.org/debian-lts-announce/2023/01/msg00004.html
