CVE-2019-9718
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2019-9718
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-9718.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2019-9718
- Downstream
- Related
- Published
- 2019-03-12T09:29:00.530Z
- Modified
- 2025-11-14T10:07:08.217276Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In FFmpeg 3.2 and 4.1, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because ffhtmlmarkupto_ass in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.
- References
-
- http://www.securityfocus.com/bid/107382
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982
- https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21
- https://seclists.org/bugtraq/2019/May/60
- https://usn.ubuntu.com/3967-1/
- https://www.debian.org/security/2019/dsa-4449
Affected packages
Git / git.ffmpeg.org/ffmpeg.git
Git / github.com/ffmpeg/ffmpeg
Affected ranges
- Type
- GIT
- Repo
- https://github.com/ffmpeg/ffmpeg
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
Other
N
n0.*
n0.11-dev
n0.12-dev
n0.8
n1.*
n1.1-dev
n1.2-dev
n1.3-dev
n2.*
n2.0
n2.1-dev
n2.2-dev
n2.3-dev
n2.4-dev
n2.5-dev
n2.6-dev
n2.7-dev
n2.8-dev
n2.9-dev
n3.*
n3.1-dev
n3.2
n3.2-dev
n3.2.1
n3.2.10
n3.2.11
n3.2.12
n3.2.13
n3.2.2
n3.2.3
n3.2.4
n3.2.5
n3.2.6
n3.2.7
n3.2.8
n3.2.9
Database specific
vanir_signatures
[
{
"digest": {
"length": 3632.0,
"function_hash": "134429341697870814247987316111924007456"
},
"signature_version": "v1",
"id": "CVE-2019-9718-755ab778",
"target": {
"file": "libavcodec/htmlsubtitles.c",
"function": "ff_htmlmarkup_to_ass"
},
"signature_type": "Function",
"source": "https://github.com/ffmpeg/ffmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21",
"deprecated": false
},
{
"digest": {
"threshold": 0.9,
"line_hashes": [
"146229409084369695006291932218330531278",
"186871920662715219977446106701134555870",
"310562769026243982809424482522257025845",
"34344457376983665913898773828430549216",
"260166848363255873671710857472511837215",
"80024346695892532889397988976103392180",
"202968329324838149850240999019982554458"
]
},
"signature_version": "v1",
"id": "CVE-2019-9718-da1a4911",
"target": {
"file": "libavcodec/htmlsubtitles.c"
},
"signature_type": "Line",
"source": "https://github.com/ffmpeg/ffmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21",
"deprecated": false
}
]