CVE-2021-3566
CVSS V2 Medium 4.3
CVSS V3 Medium 5.5
Description
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).
Overview
- CVE ID
- CVE-2021-3566
- Assigner
- patrick@puiterwijk.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-08-05T21:15:12
- Last Modified Date
- 2022-12-21T15:01:19
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:* | 1 | OR | 4.3 | |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 5.5
- Base Severity
- MEDIUM
- Exploitability Score
- 1.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/FFmpeg/FFmpeg/commit/3bce9e9b3ea35c54bacccc793d7da99ea5157532#diff-74f6b92a0541378ad15de9c29c0a2b0c69881ad9ffc71abe568b88b535e00a7f | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-3566 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3566 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:04:35 | Added to TrackCVE | |||
| 2022-12-05 07:32:58 | security@elastic.co | bressers@elastic.co | CVE Assigner | updated |
| 2022-12-05 07:32:58 | 2021-08-05T21:15Z | 2021-08-05T21:15:12 | CVE Published Date | updated |
| 2022-12-05 07:32:58 | 2021-09-20T12:23:53 | CVE Modified Date | updated | |
| 2022-12-05 07:32:58 | Analyzed | Vulnerability Status | updated | |
| 2022-12-21 15:12:35 | bressers@elastic.co | patrick@puiterwijk.org | CVE Assigner | updated |
| 2022-12-21 15:12:35 | 2022-12-21T15:01:19 | CVE Modified Date | updated | |
| 2022-12-21 15:12:35 | Weakness Enumeration | update |