UBUNTU-CVE-2015-6818

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    UBUNTU-CVE-2015-6818

    Published: 5 Sept 2015Last Modified: 4 Feb 2026
    Upstream:
    CVE-2015-6818
    Aliases:
    USN-2944-1

    Summary:

    Details: The decode_ihdr_chunk function in libavcodec/pngdec.c in FFmpeg before 2.7.2 does not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted image with two or more of these chunks.

    References: https://ubuntu.com/security/CVE-2015-6818, https://ubuntu.com/security/notices/USN-2944-1, https://www.cve.org/CVERecord?id=CVE-2015-6818

    Affected packages

    Package

    Name: ffmpeg

    Purl: pkg:deb/ubuntu/ffmpeg@7:2.8.3-1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7:2.8.3-1

    Affected versions

    7:2.7.2-1build1

    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
    UBUNTU-CVE-2015-6818 | CVE-DB