UBUNTU-CVE-2021-38171

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Source
https://ubuntu.com/security/CVE-2021-38171
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-38171.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-38171
Upstream
Downstream
Related
Published
2021-08-21T17:15:00Z
Modified
2025-09-08T16:47:16Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

adtsdecodeextradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the initgetbits return value, which is a necessary step because the second argument to initgetbits can be crafted.

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_version": "7:2.8.17-0ubuntu0.1+esm4",
            "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"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:18.04:LTS / ffmpeg

Package

Name
ffmpeg
Purl
pkg:deb/ubuntu/ffmpeg@7:3.4.11-0ubuntu0.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7:3.4.11-0ubuntu0.1

Affected versions

7:3.*

7:3.3.4-2
7:3.3.4-2build3
7:3.4-2ubuntu2
7:3.4-4
7:3.4-4build1
7:3.4.1-1
7:3.4.1-1build1
7:3.4.2-1
7:3.4.2-1build1
7:3.4.2-2
7:3.4.4-0ubuntu0.18.04.1
7:3.4.6-0ubuntu0.18.04.1
7:3.4.8-0ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "ffmpeg"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavcodec-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavcodec-extra"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavcodec-extra57"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavcodec57"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavdevice-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavdevice57"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavfilter-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavfilter-extra"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavfilter-extra6"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavfilter6"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavformat-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavformat57"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavresample-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavresample3"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavutil-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libavutil55"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libpostproc-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libpostproc54"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libswresample-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libswresample2"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libswscale-dev"
        },
        {
            "binary_version": "7:3.4.11-0ubuntu0.1",
            "binary_name": "libswscale4"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / ffmpeg

Package

Name
ffmpeg
Purl
pkg:deb/ubuntu/ffmpeg@7:4.2.7-0ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7:4.2.7-0ubuntu0.1

Affected versions

7:4.*

7:4.1.4-1build2
7:4.2.1-2
7:4.2.1-2ubuntu1
7:4.2.2-1build1
7:4.2.2-1ubuntu1
7:4.2.4-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "ffmpeg"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavcodec-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavcodec-extra"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavcodec-extra58"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavcodec58"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavdevice-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavdevice58"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavfilter-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavfilter-extra"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavfilter-extra7"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavfilter7"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavformat-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavformat58"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavresample-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavresample4"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavutil-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libavutil56"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libpostproc-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libpostproc55"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libswresample-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libswresample3"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libswscale-dev"
        },
        {
            "binary_version": "7:4.2.7-0ubuntu0.1",
            "binary_name": "libswscale5"
        }
    ],
    "availability": "No subscription required"
}