CVE-2017-16803

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.

• CWE-119

• http://www.securityfocus.com/bid/101882Third Party Advisory, VDB Entry
• https://bugzilla.libav.org/show_bug.cgi?id=1098Issue Tracking
• https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2fIssue Tracking
• https://security.gentoo.org/glsa/201811-19
• https://www.debian.org/security/2018/dsa-4119
• http://www.securityfocus.com/bid/101882Third Party Advisory, VDB Entry
• https://bugzilla.libav.org/show_bug.cgi?id=1098Issue Tracking
• https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2fIssue Tracking
• https://security.gentoo.org/glsa/201811-19
• https://www.debian.org/security/2018/dsa-4119

Published

Nov 13, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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