CVE-2018-20483

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    CVE-2018-20483

    Published: 26 Dec 2018Last Modified: 16 Apr 2026

    Summary:

    Details: set_file_metadata in xattr.c in GNU Wget before 1.20.1 stores a file's origin URL in the user.xdg.origin.url metadata attribute of the extended attributes of the downloaded file, which allows local users to obtain sensitive information (e.g., credentials contained in the URL) by reading this attribute, as demonstrated by getfattr. This also applies to Referer information in the user.xdg.referrer.url metadata attribute. According to 2016-07-22 in the Wget ChangeLog, user.xdg.origin.url was partially based on the behavior of fwrite_xattr in tool_xattr.c in curl.

    References: https://usn.ubuntu.com/3943-1/, http://www.securityfocus.com/bid/106358, https://access.redhat.com/errata/RHSA-2019:3701, https://security.gentoo.org/glsa/201903-08, https://security.netapp.com/advisory/ntap-20190321-0002/, http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS, https://twitter.com/marcan42/status/1077676739877232640

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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