Vulnerability Name:

CVE-2019-9721 (CCN-158142)

Assigned:2019-02-06
Published:2019-02-06
Updated:2022-10-07
Summary: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 v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-9721

Source: BID
Type: Broken Link
107384

Source: XF
Type: UNKNOWN
ffmpeg-cve20199721-dos(158142)

Source: CCN
Type: FFmpeg GIT Repository
Fixes denial of service due to use of sscanf in inner loop for handling braces

Source: MISC
Type: Mailing List, Patch, Third Party Advisory
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/894995c41e0795c7a44f81adc4838dedc3932e65

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/273f2755ce8635d42da3cde0eeba15b2e7842774

Source: UBUNTU
Type: Third Party Advisory
USN-3967-1

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2019-9721

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ffmpeg:ffmpeg:3.2:*:*:*:*:*:*:*
  • OR cpe:/a:ffmpeg:ffmpeg:4.1:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ffmpeg:ffmpeg:4.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7436
    P
    		apr-util-devel-1.6.1-150300.18.5.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7921
    P
    		libavcodec57-3.4.2-150200.11.28.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7480
    P
    		dbus-1-glib-0.108-1.29 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:95374
    P
    		Security update for java-11-openjdk (Important) (in QA)
    2022-07-22
    oval:org.opensuse.security:def:3302
    P
    		minicom-2.7-3.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3570
    P
    		libXvnc1-1.6.0-22.7.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94795
    P
    		python3-Pygments-2.6.1-4.3.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94932
    P
    		libavcodec57-3.4.2-11.17.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95200
    P
    		libavcodec-devel-3.4.2-11.17.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:93135
    P
    		 (Important)
    2022-05-16
    oval:org.opensuse.security:def:102087
    P
    		Security update for openjpeg2 (Important)
    2022-04-19
    oval:org.opensuse.security:def:93288
    P
    		 (Moderate)
    2022-03-30
    oval:org.opensuse.security:def:6159
    P
    		Security update for the Linux Kernel (Critical)
    2022-02-11
    oval:org.opensuse.security:def:99734
    P
    		 (Important)
    2022-01-19
    oval:org.opensuse.security:def:101508
    P
    		Security update for xen (Moderate)
    2021-09-18
    oval:org.opensuse.security:def:99142
    P
    		 (Low)
    2021-09-07
    oval:org.opensuse.security:def:9394
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:5826
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:92192
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:118325
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:111698
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:69726
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:1479
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:65239
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:10336
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:98947
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:8648
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:92982
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:109655
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:70795
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:68525
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:102059
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:74372
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:9586
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:92386
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:119795
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:108174
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:69925
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:1777
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:65304
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:102574
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:10655
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:8836
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:4150
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:70832
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:68569
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:102329
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:75983
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:100044
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:9785
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:95861
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:92585
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:108753
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:70288
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:66915
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:102989
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:10692
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:99336
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:9031
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:4215
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:91997
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:117688
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:69534
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:1028
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:76316
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:10148
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:96317
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:92784
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:109240
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:70476
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:67248
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:101719
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:74307
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:org.opensuse.security:def:99535
    P
    		Security update for ffmpeg (Important)
    2021-09-02
    oval:com.ubuntu.bionic:def:20199721000
    V
    		CVE-2019-9721 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-03-12
    oval:com.ubuntu.bionic:def:201997210000000
    V
    		CVE-2019-9721 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-03-12
    oval:com.ubuntu.cosmic:def:20199721000
    V
    		CVE-2019-9721 on Ubuntu 18.10 (cosmic) - medium.
    2019-03-12
    oval:com.ubuntu.xenial:def:201997210000000
    V
    		CVE-2019-9721 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-03-12
    oval:com.ubuntu.xenial:def:20199721000
    V
    		CVE-2019-9721 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-03-12
    oval:com.ubuntu.disco:def:201997210000000
    V
    		CVE-2019-9721 on Ubuntu 19.04 (disco) - medium.
    2019-03-12
    oval:com.ubuntu.cosmic:def:201997210000000
    V
    		CVE-2019-9721 on Ubuntu 18.10 (cosmic) - medium.
    2019-03-12
    BACK
    ffmpeg ffmpeg 3.2
    ffmpeg ffmpeg 4.1
    canonical ubuntu linux 18.04
    canonical ubuntu linux 18.10
    canonical ubuntu linux 19.04
    ffmpeg ffmpeg 4.1