CVE-2019-9721

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Una denegación de servicio en el decodificador de subtítulos en FFmpeg versión 3.2 y 4.1 permite a los atacantes acaparar la CPU a través de un archivo de vídeo elaborado en formato Matroska, porque handle_open_brace en libavcodec/htmlsubtitles.c tiene un argumento de formato complejo para sscanf

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-03-12 CVE Reserved
2019-03-12 CVE Published
2024-08-02 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (4)

URL	Tag	Source
http://www.securityfocus.com/bid/107384	Broken Link

URL	Date	SRC

URL	Date	SRC
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/894995c41e0795c7a44f81adc4838dedc3932e65	2022-10-07
https://github.com/FFmpeg/FFmpeg/commit/273f2755ce8635d42da3cde0eeba15b2e7842774	2022-10-07

URL	Date	SRC
https://usn.ubuntu.com/3967-1	2022-10-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ffmpeg Search vendor "Ffmpeg"		Ffmpeg Search vendor "Ffmpeg" for product "Ffmpeg"				3.2 Search vendor "Ffmpeg" for product "Ffmpeg" and version "3.2"		-		Affected
Ffmpeg Search vendor "Ffmpeg"		Ffmpeg Search vendor "Ffmpeg" for product "Ffmpeg"				4.1 Search vendor "Ffmpeg" for product "Ffmpeg" and version "4.1"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.04"		-		Affected