CVE-2016-9459

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    CVE-2016-9459

    Published: 28 Mar 2017Last Modified: 7 Aug 2026

    Summary:

    Details: Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a log pollution vulnerability potentially leading to a local XSS. The download log functionality in the admin screen is delivering the log in JSON format to the end-user. The file was delivered with an attachment disposition forcing the browser to download the document. However, Firefox running on Microsoft Windows would offer the user to open the data in the browser as an HTML document. Thus any injected data in the log would be executed.

    References: http://www.securityfocus.com/bid/97284, https://github.com/nextcloud/server/commit/94975af6db1551c2d23136c2ea22866a5b416070, https://github.com/owncloud/core/commit/044ee072a647636b1a17c89265c7233b35371335, https://github.com/owncloud/core/commit/b7fa2c5dc945b40bc6ed0a9a0e47c282ebf043e1, https://github.com/owncloud/core/commit/efa35d621dc7ff975468e636a5d1c153511296dc, https://nextcloud.com/security/advisory/?id=nc-sa-2016-002, https://owncloud.org/security/advisory?id=oc-sa-2016-012, https://hackerone.com/reports/146278

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -6d9809ef452d73b53d3d70493d9a92ee64bd528f

    Affected versions

    v9.0.52RC1
    v9.0.51
    v9.0.50
    v9.0.2
    v9.0.2RC2
    v9.0.2RC1
    v9.0.1RC2
    v9.0.1
    v9.0.1RC1
    v9.0.1beta
    v9.0.0
    v9.0.0RC3
    v9.0.0RC2
    v9.0.0RC1
    v9.0.0beta2

    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