VulnerabilityModified
CVE-2019-9721
A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format, because handle_open_brace in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.
MEDIUM 6.5EPSS 1.44%
Does this matter?
Lower severity and a low EPSS score (1.44%). Track it; it rarely justifies an emergency change on its own.
Description
A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format, because handle_open_brace in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 1.44% probability · 72th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- ffmpeg/ffmpeg · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://www.securityfocus.com/bid/107384Broken Link
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/894995c41e0795c7a44f81adc4838dedc3932e65Mailing List, Patch, Third Party Advisory
- https://github.com/FFmpeg/FFmpeg/commit/273f2755ce8635d42da3cde0eeba15b2e7842774Patch, Third Party Advisory
- https://usn.ubuntu.com/3967-1/Third Party Advisory
- http://www.securityfocus.com/bid/107384Broken Link
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/894995c41e0795c7a44f81adc4838dedc3932e65Mailing List, Patch, Third Party Advisory
- https://github.com/FFmpeg/FFmpeg/commit/273f2755ce8635d42da3cde0eeba15b2e7842774Patch, Third Party Advisory
- https://usn.ubuntu.com/3967-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.