CVE-2017-16803

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-11-13 · updated 2026-06-17
Weakness: CWE-119

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.

Affected products

libav: through 11.11; 12.0, 12.1

References

http://www.securityfocus.com/bid/101882
https://bugzilla.libav.org/show_bug.cgi?id=1098
https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f
https://security.gentoo.org/glsa/201811-19
https://www.debian.org/security/2018/dsa-4119
http://www.securityfocus.com/bid/101882
https://bugzilla.libav.org/show_bug.cgi?id=1098
https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f
https://security.gentoo.org/glsa/201811-19
https://www.debian.org/security/2018/dsa-4119

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