Dropbox Lepton 1.2.1 allows DoS (SEGV and application crash) via a malformed lepton file because the code does not ensure setup of a correct number of threads.Referenceshttp://openwall.com/lists/oss-security/2017/05/10/1https://github.com/dropbox/lepton/issues/87https://github.com/dropbox/lepton/commit/82167c144a322cc956da45407f6dce8d4303d346
