CVE-2018-20483
GNU Wget xattr Elevated Privileges Information Leak
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.
INFO
Published Date :
Dec. 26, 2018, 6:29 p.m.
Last Modified :
Aug. 24, 2020, 5:37 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2018-20483 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-20483.
| URL | 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://access.redhat.com/errata/RHSA-2019:3701 | |
| 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/ |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
asp-net-core csharp docker dockerfile javascript react webapi docker-compose
C# Dockerfile HTML JavaScript CSS
Map Vulnerabilities into Different Layers of the Container Image
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-20483 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-20483 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Aug. 24, 2020
Action Type Old Value New Value Changed CWE CWE-255 CWE-200 -
CVE Modified by [email protected]
Nov. 06, 2019
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2019:3701 [No Types Assigned] -
CVE Modified by [email protected]
Apr. 09, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3943-1/ [No Types Assigned] -
CVE Modified by [email protected]
Mar. 21, 2019
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20190321-0002/ [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 13, 2019
Action Type Old Value New Value Changed Reference Type http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS Release Notes http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS Release Notes, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/201903-08 No Types Assigned https://security.gentoo.org/glsa/201903-08 Third Party Advisory -
CVE Modified by [email protected]
Mar. 11, 2019
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201903-08 [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 14, 2019
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS No Types Assigned http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS Release Notes Changed Reference Type http://www.securityfocus.com/bid/106358 No Types Assigned http://www.securityfocus.com/bid/106358 Third Party Advisory, VDB Entry Changed Reference Type https://twitter.com/marcan42/status/1077676739877232640 No Types Assigned https://twitter.com/marcan42/status/1077676739877232640 Exploit, Third Party Advisory Added CWE CWE-255 Added CPE Configuration OR *cpe:2.3:a:gnu:wget:*:*:*:*:*:*:*:* versions up to (excluding) 1.20.1 -
CVE Modified by [email protected]
Jan. 01, 2019
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/106358 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 26, 2018
Action Type Old Value New Value Changed Description set_file_metadata in xattr.c in GNU Wget through 1.20 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. 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. Added Reference http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-20483 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-20483
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile