Buffer overflow in Libav
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.030 (86.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000
Affected products
- Libav — versions 12.0, 12.1
Weakness classification (CWE)
References
- www.debian.org/security/2018/dsa-4119 (vendor-advisory)
- security.gentoo.org/glsa/201811-19 (vendor-advisory)
- bugzilla.libav.org/show_bug.cgi (Issue Tracking)
- www.securityfocus.com/bid/101882 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f (Issue Tracking)
Frequently asked questions
- What is CVE-2017-16803?
- CVE-2017-16803 is a high-severity vulnerability in Libav, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2017-11-13.
- How severe is CVE-2017-16803?
- High severity. CVSS v3 base score is 7.5 out of 10.