Vulnerability · Published May 26, 2021 · Assigned by mitre
CVE-2020-22021
Medium 6.5
In plain English
A medium-severity security flaw in the ffmpeg package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.7%top 22.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Buffer Overflow vulnerability in FFmpeg 4.2 at filter_edges function in libavfilter/vf_yadif.c, which could let a remote malicious user cause a Denial of Service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | ffmpeg | 4.4.1-r0 | ALPINE-CVE-2020-22021 |
| Alpine:v3.21 | ffmpeg | 4.4.1-r0 | ALPINE-CVE-2020-22021 |
| Alpine:v3.22 | ffmpeg | 4.4.1-r0 | ALPINE-CVE-2020-22021 |
| Alpine:v3.23 | ffmpeg | 4.4.1-r0 | ALPINE-CVE-2020-22021 |
| Alpine:v3.24 | ffmpeg | 4.4.1-r0 | ALPINE-CVE-2020-22021 |
| Alpine:v3.20 | ffmpeg4 | 4.4.1-r0 | ALPINE-CVE-2020-22021 |
| Alpine:v3.21 | ffmpeg4 | 4.4.1-r0 | ALPINE-CVE-2020-22021 |
| Alpine:v3.22 | ffmpeg4 | 4.4.1-r0 | ALPINE-CVE-2020-22021 |
| Debian:12 | ffmpeg | 7:4.3.2-0+deb11u2 | DEBIAN-CVE-2020-22021 |
| Debian:13 | ffmpeg | 7:4.3.2-0+deb11u2 | DEBIAN-CVE-2020-22021 |
| Debian:14 | ffmpeg | 7:4.3.2-0+deb11u2 | DEBIAN-CVE-2020-22021 |
| Ubuntu:22.04:LTS | ffmpeg | 7:4.4.2-0ubuntu0.22.04.1 | USN-5472-1 |
Affected products (as reported)
References
- https://trac.ffmpeg.org/ticket/8240 x_refsource_MISC
- [debian-lts-announce] 20210815 [SECURITY] [DLA 2742-1] ffmpeg security update mailing-list, x_refsource_MLIST
- DSA-4990 vendor-advisory, x_refsource_DEBIAN