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Information Exposure Affecting wget package, versions <1.20.1-r0

0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
7.8 high
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SUSE
6.2 medium
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Red Hat
5.5 medium

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  • Snyk ID SNYK-ALPINE37-WGET-343780
  • published 26 Dec 2018
  • disclosed 26 Dec 2018
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Introduced: 26 Dec 2018

CVE-2018-20483 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade Alpine:3.7 wget to version 1.20.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wget package and not the wget package as distributed by Alpine. See How to fix? for Alpine:3.7 relevant fixed versions and status.

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.