The remote FreeBSD host is missing one or more security-related updates.
Pillow reports : Pillow prior to 3.3.2 may experience integer overflow errors in map.c when reading specially crafted image files. This may lead to memory disclosure or corruption. Pillow prior to 3.3.2 and PIL 1.1.7 (at least) do not check for negative image sizes in ImagingNew in Storage.c. A negative image size can lead to a smaller allocation than expected, leading to arbi trary writes.