Vulnerability Name:

CVE-2020-21697 (CCN-207326)

Assigned:2019-09-20
Published:2019-09-20
Updated:2021-11-30
Summary:A heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c of FFmpeg 4.2 allows to cause a denial of service (DOS) via a crafted avi file.
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)
5.9 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:P/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
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
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
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-416
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-21697

Source: CCN
Type: FFmpeg GIT Repository
avformat/mpegenc: Ensure packet queue stays valid

Source: XF
Type: UNKNOWN
ffmpeg-cve202021697-dos(207326)

Source: CCN
Type: ffmpeg Ticket #8188
heap-use-after-free from libavformat/mpegenc.c in mpeg_mux_write_packet

Source: MISC
Type: Exploit, Issue Tracking, Patch, Vendor Advisory
https://trac.ffmpeg.org/ticket/8188

Source: DEBIAN
Type: Third Party Advisory
DSA-4998

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ffmpeg:ffmpeg:4.2:-:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ffmpeg:ffmpeg:4.2:-:*:*:*:*:*:*

    • * 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: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: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
    BACK
    ffmpeg ffmpeg 4.2 -
    debian debian linux 11.0
    ffmpeg ffmpeg 4.2 -