CVE-2020-20891

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Source
https://cve.org/CVERecord?id=CVE-2020-20891
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20891.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-20891
Downstream
Related
Published
2021-09-20T16:15:08Z
Modified
2026-08-17T05:26:20Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Buffer Overflow vulnerability in function config_input in libavfilter/vf_gblur.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts.

References

Affected packages

Git / git.ffmpeg.org/ffmpeg.git

Affected ranges

Type
GIT
Repo
https://git.ffmpeg.org/ffmpeg.git
Events
Introduced
1529dfb73a5157dcb8762051ec4c8d8341762478
Last Affected
1529dfb73a5157dcb8762051ec4c8d8341762478
Fixed
64a805883d7223c868a683f0030837d859edd2ab
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:4.2.1:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "4.2.1"
        },
        {
            "last_affected": "4.2.1"
        }
    ],
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

4.*
4.2.1
n4.*
n4.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20891.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "5812123969433413664749728480812895768",
            "length": 786
        },
        "id": "CVE-2020-20891-8616516e",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://git.ffmpeg.org/ffmpeg.git@64a805883d7223c868a683f0030837d859edd2ab",
        "target": {
            "file": "libavfilter/vf_gblur.c",
            "function": "config_input"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "140308164302456955343886306517915745377",
                "6860359504303513529012831916119332737",
                "138465174164862388458175076057970697104",
                "46195152818601170111770941279977943669"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2020-20891-e354d7de",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://git.ffmpeg.org/ffmpeg.git@64a805883d7223c868a683f0030837d859edd2ab",
        "target": {
            "file": "libavfilter/vf_gblur.c"
        }
    }
]
vanir_signatures_modified 
"2026-08-17T05:26:20Z"

Git / github.com/ffmpeg/ffmpeg

Affected ranges

Type
GIT
Repo
https://github.com/ffmpeg/ffmpeg
Events
Introduced
1529dfb73a5157dcb8762051ec4c8d8341762478
Last Affected
1529dfb73a5157dcb8762051ec4c8d8341762478
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:4.2.1:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "4.2.1"
        },
        {
            "last_affected": "4.2.1"
        }
    ],
    "source": "CPE_STRING"
}

Affected versions

4.*
4.2.1
n4.*
n4.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20891.json"