CVE-2017-16803 json
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 recu…
published 2017-11-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7979
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.0%
- EPSS 3.0% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- ffmpeg Debian 14, Debian 13, Debian 12 7:2.2.1-1
debian advisories DEBIAN-CVE-2017-16803
Exploit prediction
3.01% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
github.com
/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f
issue-tracking
-
debian.org
/security/2018/dsa-4119
vendor-advisory
-
security.gentoo.org
/glsa/201811-19
vendor-advisory
-
bugzilla.libav.org
/show_bug.cgi?id=1098
issue-tracking
-
securityfocus.com
/bid/101882
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-16803
- NVD CVE-2017-16803
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.