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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.01% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- libav/libav
- Source
- cve@mitre.org
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.