Vulnerability Details CVE-2019-9718
In FFmpeg 3.2 and 4.1, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because ff_htmlmarkup_to_ass in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.019
EPSS Ranking 82.4%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 4.3
References
- http://www.securityfocus.com/bid/107382
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982
- https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21
- https://seclists.org/bugtraq/2019/May/60
- https://usn.ubuntu.com/3967-1/
- https://www.debian.org/security/2019/dsa-4449
- http://www.securityfocus.com/bid/107382
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982
- https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21
- https://seclists.org/bugtraq/2019/May/60
- https://usn.ubuntu.com/3967-1/
- https://www.debian.org/security/2019/dsa-4449
Products affected by CVE-2019-9718
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cpe:2.3:a:ffmpeg:ffmpeg:3.2
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cpe:2.3:a:ffmpeg:ffmpeg:4.1
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:canonical:ubuntu_linux:18.10
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cpe:2.3:o:canonical:ubuntu_linux:19.04
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cpe:2.3:o:debian:debian_linux:9.0