Vulnerability · Published May 24, 2021 · Assigned by mitre
CVE-2020-21041
High 7.5
In plain English
A high-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 2.1% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.1%top 18.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Buffer Overflow vulnerability exists in FFmpeg 4.1 via apng_do_inverse_blend in libavcodec/pngenc.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-r0 | ALPINE-CVE-2020-21041 |
| Alpine:v3.21 | ffmpeg | 4.4-r0 | ALPINE-CVE-2020-21041 |
| Alpine:v3.22 | ffmpeg | 4.4-r0 | ALPINE-CVE-2020-21041 |
| Alpine:v3.23 | ffmpeg | 4.4-r0 | ALPINE-CVE-2020-21041 |
| Alpine:v3.24 | ffmpeg | 4.4-r0 | ALPINE-CVE-2020-21041 |
| Alpine:v3.20 | ffmpeg4 | 4.4-r0 | ALPINE-CVE-2020-21041 |
| Alpine:v3.21 | ffmpeg4 | 4.4-r0 | ALPINE-CVE-2020-21041 |
| Alpine:v3.22 | ffmpeg4 | 4.4-r0 | ALPINE-CVE-2020-21041 |
| Debian:12 | ffmpeg | 7:4.3.2-0+deb11u2 | DEBIAN-CVE-2020-21041 |
| Debian:13 | ffmpeg | 7:4.3.2-0+deb11u2 | DEBIAN-CVE-2020-21041 |
| Debian:14 | ffmpeg | 7:4.3.2-0+deb11u2 | DEBIAN-CVE-2020-21041 |
| 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/7989 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