UBUNTU-CVE-2019-9718

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    UBUNTU-CVE-2019-9718

    Published: 12 Mar 2019Last Modified: 22 Apr 2026
    Upstream:
    CVE-2019-9718
    Aliases:
    USN-3967-1

    Summary:

    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 ff_htmlmarkup_to_ass in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.

    References: https://ubuntu.com/security/CVE-2019-9718, https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982, https://ubuntu.com/security/notices/USN-3967-1, https://www.cve.org/CVERecord?id=CVE-2019-9718

    Affected packages

    Package

    Name: ffmpeg

    Purl: pkg:deb/ubuntu/ffmpeg@7:3.4.6-0ubuntu0.18.04.1?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7:3.4.6-0ubuntu0.18.04.1

    Affected versions

    7:3.3.4-2
    7:3.3.4-2build3

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High