CVE-2018-20819

io/ZlibCompression.cc in the decompression component in Dropbox Lepton
1.2.1 allows attackers to cause a denial of service (heap-based buffer
overflow and application crash) or possibly have unspecified other impact
by crafting a jpg image file. The root cause is a missing check of header
payloads that may be (incorrectly) larger than the maximum file size.