National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-20483 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8


Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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://twitter.com/marcan42/status/1077676739877232640 Exploit Third Party Advisory
https://usn.ubuntu.com/3943-1/

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.3

Configuration 1 ( hide )
 cpe:/a:gnu:wget
     Show Matching CPE(s)
Up to (excluding)
1.20.1


Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20483
NVD Published Date:
12/26/2018
NVD Last Modified:
04/09/2019