{"id":"CVE-2017-16803","details":"In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.","modified":"2026-07-08T11:48:06.284644Z","published":"2017-11-13T17:29:00.567Z","references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/101882"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201811-19"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4119"},{"type":"REPORT","url":"https://bugzilla.libav.org/show_bug.cgi?id=1098"},{"type":"REPORT","url":"https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libav/libav","events":[{"introduced":"0"},{"last_affected":"8a212b1d060267671823f562baaea570194770f5"},{"introduced":"11cd727fbd603197cb1e49654fce3352d56f8fd8"},{"last_affected":"c9ea47b37813c513e9d5e46bfceaa54f63e8e8bd"},{"fixed":"cd4663dc80323ba64989d0c103d51ad3ee0e9c2f"}],"database_specific":{"source":["CPE_RANGE","CPE_STRING","REFERENCES"],"extracted_events":[{"introduced":"0"},{"last_affected":"11.11"},{"introduced":"12.0"},{"last_affected":"12.0"},{"introduced":"12.1"},{"last_affected":"12.1"}],"cpe":["cpe:2.3:a:libav:libav:*:*:*:*:*:*:*:*","cpe:2.3:a:libav:libav:12.0:*:*:*:*:*:*:*","cpe:2.3:a:libav:libav:12.1:*:*:*:*:*:*:*"]}}],"versions":["12.0","12.1","v11.11","v11.10","v12.1","v11.9","v12","v12_beta1","v11.8","v12_alpha2","v12_alpha1","v13_dev0","v11.7","v11.6","v11.5","v11.4","v11.3","v11.2","v11.1","v11","v12_dev0","v11_beta1","v11_alpha2","v11_alpha1","v10_beta1","v11_dev0","dev14.2","v10_alpha2","v10_alpha1","v9","v9_beta3","v9_beta2","v9_beta1","v0.8","v0.8b2","v0.8b1","v0.7","v0.7rc1","v0.7b2","v0.7b1"],"database_specific":{"vanir_signatures":[{"id":"CVE-2017-16803-3b392cb7","digest":{"length":792,"function_hash":"183547660380170280711471651800116203628"},"source":"https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f","signature_version":"v1","signature_type":"Function","target":{"function":"smacker_decode_tree","file":"libavcodec/smacker.c"},"deprecated":false},{"id":"CVE-2017-16803-fd66ef85","digest":{"threshold":0.9,"line_hashes":["57782155000580644280659291381236819405","168308859680547023445769591452423550514","232886316212274301802687981183727058328","131988101388250383645963360628216100009","254860830881963386093451418569067919100","113502001634993761275757689463064432041","18282693971454426057553101421443167894"]},"source":"https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f","signature_version":"v1","signature_type":"Line","target":{"file":"libavcodec/smacker.c"},"deprecated":false}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-16803.json","vanir_signatures_modified":"2026-07-08T11:48:06Z"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}