node.js – How prototype pollution works? Need simple explanation

node.js – How prototype pollution works? Need simple explanation – Information Security Stack Exchange

javascript – letting users create object themselves (prototype pollution)

Let’s say if there’s some object and an array

let a = [];
let b= {
"d":{"Admin":0},
"c": e // e is user controlled where user inputs get parsed via JSON.parse
}

a[f] = b // f is user controlled and it is achieved as a string

will the user be able to somehow change the object value in d using the parsed object of c?

And could there be a possible prototype pollution here?

Thank you.

Pollution License for Business Set up in Punjab

If you plan on starting any business that could generate pollutants such as chemical waste, detergent washing, fly ashes, smoke emissions (including cooking smoke), and medical waste, to name a few – also referred to as trade effluents. You will need to apply to the Punjab Pollution Control Board and obtain a pollution license or consent to establish your business.
This consent to establish will obtain before starting the business.Once the setup state is complete, you will have to apply and obtain a consent to operate ( CTO). This CTO will usually be valid for five years, which may vary from State to State.
The Ministry of Environment, Forest and Climate Change (MoEFCC) has built up the standards of the order of modern areas dependent on the Pollution Index, which is a component of the outflows (air contaminations), effluents (water toxins), dangerous wastes produced and utilization of assets. Examine the rundown of ventures that the Central Pollution Control Board has determined as requiring contamination permitted in the red, orange, green, and white classification.
As the name proposes, the Red classification industry has the most exceptional contamination list, such as substantial assembling enterprises, enormous lodgings, emergency dispensaries, etc. The orange classification is a moderately medium-sized endeavor, which creates nearly elevated levels of contamination. However, the Green classification is the arrangement of the business with a low contamination Index. Lastly, the white class, which is non-contaminating.

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Punjab Pollution Control Board

If you plan on starting any business that could generate pollutants such as chemical waste, detergent washing, fly ashes, smoke emissions (including cooking smoke), and medical waste, to name a few – also referred to as trade effluents. You will need to apply to the Punjab Pollution Control Board and obtain a pollution license or consent to establish your business.
This consent to establish will obtain before starting the business.Once the setup state is complete, you will have to apply and obtain a consent to operate ( CTO). This CTO will usually be valid for five years, which may vary from State to State.
The Ministry of Environment, Forest and Climate Change (MoEFCC) has built up the standards of the order of modern areas dependent on the Pollution Index, which is a component of the outflows (air contaminations), effluents (water toxins), dangerous wastes produced and utilization of assets. Examine the rundown of ventures that the Central Pollution Control Board has determined as requiring contamination permitted in the red, orange, green, and white classification.
As the name proposes, the Red classification industry has the most exceptional contamination list, such as substantial assembling enterprises, enormous lodgings, emergency dispensaries, etc. The orange classification is a moderately medium-sized endeavor, which creates nearly elevated levels of contamination. However, the Green classification is the arrangement of the business with a low contamination Index. Lastly, the white class, which is non-contaminating.

.(tagsToTranslate)webmaster forum(t)internet marketing(t)search engine optimization(t)web designing(t)seo(t)ppc(t)affiliate marketing(t)search engine marketing(t)web hosting(t)domain name(t)social media

security – Client side HTTP parameter pollution (reflected)

Some of my sites have been flagged by a security scanner as being vulnerable to client-side HTTP parameter pollution. The security department says that this must be fixed. How can I protect against this in WordPress? Any help is greatly appreciated!

Issue detail

The name of an arbitrarily supplied URL parameter is copied into the response within the query string of a URL.

The payload wzx&sfy=1 was submitted in the name of an arbitrarily supplied URL parameter. This input was echoed as wzx&sfy=1 within the “action” attribute of a “form” tag.

This proof-of-concept attack demonstrates that it is possible to inject arbitrary query string parameters into URLs in the application’s response.

Request

GET (removed)?wzx%26sfy%3d1=1 HTTP/1.1

Host: (removed)

Accept-Encoding: gzip, deflate

Accept: /

Accept-Language: en-US,en-GB;q=0.9,en;q=0.8

User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36

Connection: close

Referer: (removed)

Response

HTTP/1.1 200 OK

Date: Thu, 09 Jul 2020 00:44:05 GMT

Server: Apache

Link: <(removed)?p=35>; rel=shortlink

Strict-Transport-Security: max-age=31557600; preload

Vary: Accept-Encoding,User-Agent

X-Frame-Options: SAMEORIGIN

Content-Length: 28294

Connection: close

Content-Type: text/html; charset=UTF-8

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-US">
<hea
...(SNIP)...
<form method='post' enctype='multipart/form-data' id='gform_1' action='(removed)?wzx&#038;sfy=1=1'>
...(SNIP)...

How can HTTP Parameter Pollution be exploited?

In HTTP Parameter Pollution I know theoretically how it works; You inject several HTTP lists with the same name to cause errors in the server, but I can not understand how to exploit this.

For example, if I send a request using this technique and know, for example, that the server is using the last occurrence of parameters, this technique may be useful because the server using the last occurrence does not care what other occurrences are correct? Or, if the server concatenates parameters with the same name, a server script will get a chained result.

Is reducing pollution, for example to prevent global warming, part of a left-leaning agenda?

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