UBUNTU-CVE-2021-3566

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Source
https://ubuntu.com/security/CVE-2021-3566
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3566.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-3566
Upstream
Downstream
Related
Published
2021-08-05T21:15:00Z
Modified
2025-09-08T16:46:45Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Prior to ffmpeg version 4.3, the tty demuxer did not have a 'read_probe' function assigned to it. By crafting a legitimate "ffconcat" file that references an image, followed by a file the triggers the tty demuxer, the contents of the second file will be copied into the output file verbatim (as long as the -vcodec copy option is passed to ffmpeg).

References

Affected packages

Ubuntu:Pro:16.04:LTS / ffmpeg

Package

Name
ffmpeg
Purl
pkg:deb/ubuntu/ffmpeg@7:2.8.17-0ubuntu0.1+esm4?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7:2.8.17-0ubuntu0.1+esm4

Affected versions

7:2.*

7:2.7.2-1build1
7:2.8.1-1ubuntu1
7:2.8.2-1ubuntu1
7:2.8.3-1
7:2.8.4-1
7:2.8.4-1ubuntu1
7:2.8.4-1ubuntu2
7:2.8.4-1ubuntu3
7:2.8.4-1ubuntu4
7:2.8.6-1ubuntu1
7:2.8.6-1ubuntu2
7:2.8.8-0ubuntu0.16.04.1
7:2.8.10-0ubuntu0.16.04.1
7:2.8.11-0ubuntu0.16.04.1
7:2.8.14-0ubuntu0.16.04.1
7:2.8.15-0ubuntu0.16.04.1
7:2.8.15-0ubuntu0.16.04.1+esm1
7:2.8.17-0ubuntu0.1
7:2.8.17-0ubuntu0.1+esm1
7:2.8.17-0ubuntu0.1+esm2
7:2.8.17-0ubuntu0.1+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ffmpeg",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libav-tools",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavcodec-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavcodec-ffmpeg-extra56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavcodec-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavdevice-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavdevice-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavfilter-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavfilter-ffmpeg5",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavformat-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavformat-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavresample-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavresample-ffmpeg2",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavutil-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libavutil-ffmpeg54",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libpostproc-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libpostproc-ffmpeg53",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libswresample-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libswresample-ffmpeg1",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libswscale-dev",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        },
        {
            "binary_name": "libswscale-ffmpeg3",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm4"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3566.json"