CWE
125
Advisory Published
Updated

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 cve@mitre.org

Affected SoftwareAffected VersionHow 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
7:4.3.8-0+deb11u1
7:5.1.6-0+deb12u1
7:7.1-3

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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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