{"id":"CVE-2019-20786","details":"handleIncomingPacket in conn.go in Pion DTLS before 1.5.2 lacks a check for application data with epoch 0, which allows remote attackers to inject arbitrary unencrypted data after handshake completion.","aliases":["GHSA-7gfg-6934-mqq2","GO-2020-0038"],"modified":"2026-03-20T03:27:01.474578Z","published":"2020-04-19T20:15:11.587Z","references":[{"type":"ADVISORY","url":"https://www.usenix.org/conference/usenixsecurity20/presentation/fiterau-brostean"},{"type":"FIX","url":"https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0"},{"type":"FIX","url":"https://github.com/pion/dtls/compare/v1.5.1...v1.5.2"},{"type":"EVIDENCE","url":"https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdf"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pion/dtls","events":[{"introduced":"0"},{"fixed":"fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.5.2"}]}}],"versions":["v1.0.0","v1.0.1","v1.0.2","v1.1.0","v1.1.1","v1.2.1","v1.2.2","v1.2.3","v1.3.0","v1.3.1","v1.3.2","v1.3.3","v1.3.4","v1.3.5","v1.4.0","v1.5.0","v1.5.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-20786.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}