Lucene search

[email protected]CVE-2021-3566

HistoryAug 05, 2021 - 9:15 p.m.

CVE-2021-3566

2021-08-0521:15:12

CWE-200

[email protected]

web.nvd.nist.gov

cve-2021-3566

ffmpeg

vulnerability

ffconcat

file copying

nvd

security

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

6.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

39.3%

JSON

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).

Affected configurations

NVD

Node

ffmpegffmpegRange<4.3

Node

debiandebian_linuxMatch9.0

CPENameOperatorVersion
ffmpeg:ffmpegffmpeglt4.3

CPE	Name	Operator	Version
ffmpeg:ffmpeg	ffmpeg	lt	4.3

CNA Affected

[
  {
    "product": "ffmpeg",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "ffmpeg 4.3"
      }
    ]
  }
]