View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2018-20819 medium priority: Ubuntu including 1 source packages (lepton), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): not-affected 3, DNE 2, needs-triage 1.
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.