Vulnerability CVE-2020-22020

Vulnerability Name:

CVE-2020-22020 (CCN-202653)

Assigned:

2019-07-07

Published:

2019-07-07

Updated:

2021-11-05

Summary:

Buffer Overflow vulnerability in FFmpeg 4.2 in the build_diff_map function in libavfilter/vf_fieldmatch.c, which could let a remote malicious user cause a Denial of Service.

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:U/RC:R)

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)
3.0 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:P/RL:U/RC:R)

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-120

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2020-22020

Source: MISC
Type: Patch, Vendor Advisory
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=ce5274c1385d55892a692998923802023526b765

Source: XF
Type: UNKNOWN
ffmpeg-cve202022020-dos(202653)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210815 [SECURITY] [DLA 2742-1] ffmpeg security update

Source: CCN
Type: ffmpeg Ticket #8239
heap-buffer-overflow at libavfilter/vf_fieldmatch.c

Source: MISC
Type: Exploit, Issue Tracking, Vendor Advisory
https://trac.ffmpeg.org/ticket/8239

Source: DEBIAN
Type: Third Party Advisory
DSA-4990

Vulnerable Configuration:

Configuration 1:

cpe:/a:ffmpeg:ffmpeg:4.2:-:*:*:*:*:*:*

Configuration 2:

cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:ffmpeg:ffmpeg:4.2:-:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
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:7430	P	aide-0.16-24.1 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:7475	P	cups-filters-1.25.0-3.3.1 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:6092	P	Security update for crash (Important)	2022-07-07
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:94784	P	permissions-20201225-150400.3.4 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:95319	P	Security update for go1.18 (Moderate)	2022-05-24
oval:org.opensuse.security:def:93135	P	(Important)	2022-05-16
oval:org.opensuse.security:def:93288	P	(Moderate)	2022-03-30
oval:org.opensuse.security:def:102032	P	Security update for the Linux Kernel (Live Patch 4 for SLE 15 SP3) (Important)	2022-03-29
oval:org.opensuse.security:def:99734	P	(Important)	2022-01-19
oval:org.opensuse.security:def:99142	P	(Low)	2021-09-07
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:92192	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: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: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:69925	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: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:92585	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: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:91997	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:101497	P	Security update for gstreamer-plugins-good (Moderate)	2021-09-02
oval:org.opensuse.security:def:10148	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:70476	P	Security update for ffmpeg (Important)	2021-09-02
oval:org.opensuse.security:def:74296	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:5771	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:111620	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:65228	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:109647	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:70787	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:117677	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:68519	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:102321	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:74360	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:108163	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:65292	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:102568	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:10647	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:4139	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:70824	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:118319	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:68564	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:1474	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:75928	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:95855	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:108698	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:66860	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:102981	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:10684	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:4203	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:119787	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:1769	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:76249	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:96309	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:109234	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:67181	P	Security update for ffmpeg (Important)	2021-07-14
oval:org.opensuse.security:def:101707	P	Security update for ffmpeg (Important)	2021-07-14

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