{"id":"CVE-2017-16803","aliases":["DEBIAN-CVE-2017-16803","DSA-4119-1","EUVD-2017-7979","GHSA-j8rq-pgqm-7hx7","UBUNTU-CVE-2017-16803"],"status":"published","title":"In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec...","description":"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.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0301,"percentile":0.87501,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2017-11-13T17:00:00Z","modified":"2026-10-20T13:21:14Z","fixes":[{"ecosystem":"Debian:12","package":"ffmpeg","fixed_in":["7:2.2.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ffmpeg","fixed_in":["7:2.2.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ffmpeg","fixed_in":["7:2.2.1-1"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"libav","fixed_in":["6:11.12-1~deb8u1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:2.2.1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:2.2.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"ffmpeg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:2.2.1-1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"libav","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6:11.12-1~deb8u1"}]}],"versions":["6:11.11-1~deb8u1","6:11.3-1","6:11.3-1+deb8u1","6:11.3-2","6:11.3-3","6:11.4-1","6:11.4-1~deb8u1","6:11.4-2","6:11.4-2+x32.1","6:11.6-1~deb8u1","6:11.7-1~deb8u1","6:11.8-1~deb8u1","6:11.9-1~deb8u1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"libav","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6:0.8.7-1ubuntu2","6:9.10-1ubuntu1","6:9.10-1ubuntu2","6:9.10-1ubuntu5","6:9.10-1ubuntu6","6:9.10-1ubuntu7","6:9.11-2ubuntu1","6:9.11-2ubuntu2","6:9.13-0ubuntu0.14.04.1","6:9.14-0ubuntu0.14.04.1","6:9.16-0ubuntu0.14.04.1","6:9.18-0ubuntu0.14.04.1","6:9.20-0ubuntu0.14.04.1","6:9.20-0ubuntu0.14.04.1+esm1"]}],"products":[{"vendor":"libav","product":"libav"}],"references":[{"url":"https://www.debian.org/security/2018/dsa-4119","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://security.gentoo.org/glsa/201811-19","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://bugzilla.libav.org/show_bug.cgi?id=1098","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","report"]},{"url":"http://www.securityfocus.com/bid/101882","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-16803"},{"url":"https://github.com/advisories/GHSA-j8rq-pgqm-7hx7"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-16803","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-16803","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-16803","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-16803","description":"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.","status":"published","published":"2017-11-13T17:00:00Z","modified":"2024-08-05T20:35:21.014Z","updated_at":"2026-11-02T14:33:21.142987Z"}],"euvd":[{"id":"EUVD-2017-7979","description":"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.","status":"published","published":"2017-11-13T17:00:00Z","modified":"2024-08-05T20:35:21Z","updated_at":"2026-11-03T02:23:11.533108Z"}],"ghsa":[{"id":"GHSA-j8rq-pgqm-7hx7","title":"In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec...","description":"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.","status":"published","published":"2022-05-14T01:56:35Z","modified":"2023-02-02T05:04:50Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:51:58.308794Z"}],"nvd":[{"id":"CVE-2017-16803","description":"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.","status":"published","published":"2017-11-13T17:29:00.567Z","modified":"2026-06-17T01:09:56.953Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:04:08.635428Z"}],"osv":[{"id":"CVE-2017-16803","description":"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 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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.","status":"published","published":"2017-11-13T17:29:00Z","modified":"2026-04-22T11:19:42.219761Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:14.563448Z"},{"id":"DSA-4119-1","title":"libav - security update","status":"published","published":"2018-02-19T00:00:00Z","modified":"2026-03-09T01:23:31.422817Z","updated_at":"2026-11-02T15:46:16.862196Z"}]}}