CVE-2019-9718

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.securityfocus.com/bid/107382Broken Link
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982Patch, Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21Patch, Third Party Advisory
https://seclists.org/bugtraq/2019/May/60Mailing List, Third Party Advisory
https://usn.ubuntu.com/3967-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4449Third Party Advisory
http://www.securityfocus.com/bid/107382Broken Link
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982Patch, Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21Patch, Third Party Advisory
https://seclists.org/bugtraq/2019/May/60Mailing List, Third Party Advisory
https://usn.ubuntu.com/3967-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4449Third Party Advisory

Timeline

Published: Mar 12, 2019
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2019

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