CVE-2018-20483

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.

CVSS v3.0 7.8 HIGH
CVSS v2.0 2.1 LOW

7.8^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://twitter.com/marcan42/status/1077676739877232640	Exploit Third Party Advisory
http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS	Release Notes Third Party Advisory
http://www.securityfocus.com/bid/106358	Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201903-08	Third Party Advisory
https://security.netapp.com/advisory/ntap-20190321-0002/
https://usn.ubuntu.com/3943-1/
https://access.redhat.com/errata/RHSA-2019:3701

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Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:wget:*:*:*:*:*:*:*:*

Information

Published : 2018-12-26 10:29

Updated : 2020-08-24 10:37

NVD link : CVE-2018-20483

Mitre link : CVE-2018-20483

JSON object : View

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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Products Affected

gnu

wget

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