{"action":"Upgrade python-cryptography to 1.5.3-1 or later.","affected":[{"fixed":"1.5.3-1","introduced":"0"}],"component":"python-cryptography","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1.5.3-1"],"id":"tcs_01M5NBT3JV5T3KSCRFSMTT33MR","modified_at":"2026-09-22T07:02:38.862158153Z","published_at":"2017-03-27T17:59:00.460Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2016-9243","https://security-tracker.debian.org/tracker/CVE-2016-9243"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2016-9243#Debian:14/python-cryptography","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2016-9243"}],"summary":"HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size."}