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MitreCVE-2019-9721

HistoryMar 12, 2019 - 9:29 a.m.

CVE-2019-9721

2019-03-1209:29:00

CWE-125

mitre

web.nvd.nist.gov

125

cve-2019-9721

ffmpeg

denial of service

subtitle decoder

vulnerability

nvd

cpu hog

crafted video file

matroska format

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.8

Confidence

High

EPSS

0.003

Percentile

65.4%

JSON

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.

Affected configurations

Nvd

Node

ffmpegffmpegMatch3.2

ffmpegffmpegMatch4.1

Node

canonicalubuntu_linuxMatch18.04lts

canonicalubuntu_linuxMatch18.10

canonicalubuntu_linuxMatch19.04

VendorProductVersionCPE
ffmpegffmpeg3.2cpe:2.3:a:ffmpeg:ffmpeg:3.2:*:*:*:*:*:*:*
ffmpegffmpeg4.1cpe:2.3:a:ffmpeg:ffmpeg:4.1:*:*:*:*:*:*:*
canonicalubuntu_linux18.04cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonicalubuntu_linux18.10cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
canonicalubuntu_linux19.04cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
ffmpeg	ffmpeg	3.2	cpe:2.3:a:ffmpeg:ffmpeg:3.2:::::::*
ffmpeg	ffmpeg	4.1	cpe:2.3:a:ffmpeg:ffmpeg:4.1:::::::*
canonical	ubuntu_linux	18.04	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
canonical	ubuntu_linux	18.10	cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*
canonical	ubuntu_linux	19.04	cpe:2.3:o:canonical:ubuntu_linux:19.04:::::::*