CVE-2019-9718
First published: Tue Mar 12 2019(Updated: )
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 ff_htmlmarkup_to_ass in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FFmpeg FFmpeg | =3.2 | |
| FFmpeg FFmpeg | =4.1 | |
| Debian Debian Linux | =9.0 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| Canonical Ubuntu Linux | =19.04 | |
| debian/ffmpeg | 7:4.3.7-0+deb11u1 7:5.1.6-0+deb12u1 7:7.0.2-3 |
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Reference Links
- http://www.securityfocus.com/bid/107382
- https://seclists.org/bugtraq/2019/May/60
- https://www.debian.org/security/2019/dsa-4449
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982
- https://usn.ubuntu.com/3967-1/
- https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21
- https://launchpad.net/bugs/cve/CVE-2019-9718
- https://security-tracker.debian.org/tracker/CVE-2019-9718
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9718
- https://nvd.nist.gov/vuln/detail/CVE-2019-9718
- https://ubuntu.com/security/CVE-2019-9718
Frequently Asked Questions
What is the vulnerability ID for the FFmpeg vulnerability?
The vulnerability ID for the FFmpeg vulnerability is CVE-2019-9718.
What is the severity of CVE-2019-9718?
The severity of CVE-2019-9718 is medium (CVSS score: 6.5).
How does the vulnerability in FFmpeg 3.2 and 4.1 affect the CPU?
The vulnerability in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format.
Which versions of FFmpeg are affected by CVE-2019-9718?
FFmpeg versions 3.2 and 4.1 are affected by CVE-2019-9718.
Where can I find more information about CVE-2019-9718?
You can find more information about CVE-2019-9718 at the following references: [1](http://www.securityfocus.com/bid/107382), [2](https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982), [3](https://github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21).
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- vendor/ffmpeg
- canonical/ffmpeg ffmpeg
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