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CVE-2019-9721
Detail
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.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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OR
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
Changed
CPE Configuration
OR
*cpe:2.3:a:ffmpeg:ffmpeg:4.1:*:*:*:*:*:*:*
OR
*cpe:2.3:a:ffmpeg:ffmpeg:3.2:*:*:*:*:*:*:*
*cpe:2.3:a:ffmpeg:ffmpeg:4.1:*:*:*:*:*:*:*
Removed
CVSS V3
NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Changed
Reference Type
http://www.securityfocus.com/bid/107384 Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/107384 Broken Link
Changed
Reference Type
https://github.com/FFmpeg/FFmpeg/commit/273f2755ce8635d42da3cde0eeba15b2e7842774 No Types Assigned
https://github.com/FFmpeg/FFmpeg/commit/273f2755ce8635d42da3cde0eeba15b2e7842774 Patch, Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3967-1/ No Types Assigned
https://usn.ubuntu.com/3967-1/ Third Party Advisory
CVE Modified by MITRE1/04/2021 3:15:12 PM
Action
Type
Old Value
New Value
Changed
Description
A denial of service in the subtitle decoder in FFmpeg 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.
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.