Immunefi Launches Bug Bounty Whitehat Protocol to Protect DeFi

Immunefi has officially launched the first version of its decentralized bug bounty protocol today, called the Whitehat Protocol, after…Continue reading on Immunefi »
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Dark Reading: Attacks/Breaches
Latest Security News From RSAC 2021

Check out Dark Reading's updated, exclusive coverage of the news and security themes that are dominating RSA Conference 2021.

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Dark Reading: Attacks/Breaches
Rapid7 Is the Latest Victim of a Software Supply Chain Breach

Security vendor says attackers accessed some of its source code using a previously compromised Bash Uploader script from Codecov.

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Dark Reading: Attacks/Breaches
DDoS Attacks Up 31% in Q1 2021: Report

If pace continues, DDoS attack activity could surpass last year's 10-million attack threshold.

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Dark Reading: Attacks/Breaches
47% of Criminals Buying Exploits Target Microsoft Products

Researchers examine English- and Russian-language underground exploits to track how exploits are advertised and sold.

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My Fourth Account takeover through password reset
https://seaman00o.medium.com/my-fourth-account-takeover-through-password-reset-28a36dfebaf?source=rss------bug_bounty-5

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Hello Everyone,Continue reading on Medium » (https://seaman00o.medium.com/my-fourth-account-takeover-through-password-reset-28a36dfebaf?source=rss------bug_bounty-5)

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hacking: security in practice
PDF password

I've an upcoming exam that will be emailed to me in pdf format about 13 hours before the exam starts. I will be given the password 5 mins before the exam start time to open the PDF. Is there any tools/software that I can use to access the pdf /bypass the password in advance ?

submitted by /u/Impossible-Dream-366
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My Fourth Account takeover through password reset

Hello Everyone,Continue reading on Medium »
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Corsair_Scan - A Security Tool To Test Cross-Origin Resource Sharing (CORS)
http://www.kitploit.com/2021/05/corsairscan-security-tool-to-test-cross.html

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Corsair_scan is a security tool to test Cross-Origin Resource Sharing (CORS) misconfigurations. CORS is a mechanism that allows restricted resources on a web page to be requested from another domain outside the domain from which the first resource was served. If this is not properly configured, unauthorised domains can access to those resources.
What is CORS?
CORS is an HTTP-header based mechanism that allows a server to indicate any other origins (domain, scheme, or port) than its own from which a browser should permit loading of resources. It works by adding new HTTP headers that let servers describe which origins are permitted to read that information from a web browser. CORS also relies on a mechanism by which browsers make a “preflight” request to the server hosting the cross-origin resource, in order to check that the server will permit the actual request. In that preflight, the browser sends headers that indicate the HTTP method and headers that will be used in the actual request. The most common and problematic security issue when implementing CORS is the failure to validate/whitelist requestors. Too often, we see the value for Access-Control-Allow-Origin set to ‘*’. Unfortunately, this is the default and as such allows any domain on the web to access that site’s resources. As per the OWASP Application Security Verification Standard (ASVS), requirement 14.5.3 (https://github.com/OWASP/ASVS/blob/6454d64fb1d23c1609050df0a017e7ae2fd6beb1/4.0/en/0x22-V14-Config.md) states Verify that the Cross-Origin Resource Sharing (CORS) Access-Control-Allow-Origin header uses a strict allow list of trusted domains and subdomains (https://www.kitploit.com/search/label/Subdomains) to match against and does not support the "null" origin.
How Does corsair_scan work?
Corsair_scan works by resending a request (or list of requests) received as a parameter and then injecting a value in the Origin header. Depending on the content of the Access-Control-Allow-Origin header in the response to this request, we can assert if CORS configuration is correct or not. There are three scenarios that indicate that CORS is misconfigured: The fake origin sent in the request is reflected in Access-Control-Allow-Origin The value of Access-Control-Allow-Origin is * The value of Access-Control-Allow-Origin is null If CORS is found to be misconfigured, we check to see if the response contains the header Access-Control-Allow-Credentials, which means that the server allows credentials (https://www.kitploit.com/search/label/Credentials) to be included on cross-origin requests. Often, CORS configurations make use of wildcards, for example accepting anything under * example.com *. This means that the origin domain.com.evil.com will be accepted as it matches the given regex. To try and combat this, corsair_scan tests four scenarios: Fake domain injection: We set the origin header to https://scarymonster.com (https://scarymonster.com/), even if the original request doesn't have an origin header If the original request has an origin header (for clarity, lets assume it is https://example.com (https://example.com/)): Pre-domain injection: We concatenate our fake domain to the original domain on the left. In our example, the origin will be set to https://scarymonsterexample.com (https://scarymonsterexample.com/) Post-domain injection: The opposite of pre-domain, just concatenation on the right. The origin will be https://example.com.scarymonster.com (https://example.com.scarymonster.com/) Sub-domain injection: Sometimes the CORS configuration whitelists (https://www.kitploit.com/search/label/Whitelists) all the subdomains under a given domain. Although it is not a problem per-se, if one of the domains is vulnerable (https://www.kitploit.com/search/label/Vulnerable) to XSS, then, it can be a serious problem. The origin in this scenario will be https://scarymonster.example.com (https://scarymonster.example.com/)
How Do I Install It?

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This project was developed with Python 3.9, but should work with any Python 3.x version. corsair_scan has been designed to be used as a Python module , so the easiest way to install it is using pip. pip3 install corsair_scan --user
How Do I Use It?
At the moment, corsair_scan is intended to be used as a Python package. However, we plan to release this as a command line (https://www.kitploit.com/search/label/Command%20Line) tool (CLI) in future releases. The method that performs the CORS scan is corsair_scan. Here is its definition:
corsair_scan
Receives a list of requests and a parameter to enable/disable certificate check in the request Input: data [List]: A list of requests. Each request is a dictionary that contains the relevant data for the request: url_data [Dict]: This is a dictionary that contains all the relevant data for the request: url [String]: This is the url where the request is sent verb [String]: The verb for the request (get, post, patch, delete, options...) params [String]: The body sent in the request (if any) headers [Dict]: This is a dict with all the headers included in the request verify [Boolean] [Default: True] : Sends this value to corsair_scan_single_url for each request Output: final_report [List]: Contains the full report for the test performed. If filter is set to true, it also adds a summary of the test to the report. report [List]: List of detailed individual reports with the test performed summary [Dict] : Summary of the issues detected in the scan
Example
import corsair_scan
url_data = {}
data = []
verb = 'GET'
url = 'https://example.com/'
params = 'user=user1&password=1234'
headers = {'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
'Accept-Language': 'en-GB,en;q=0.5', 'Connection': 'keep-alive', 'Upgrade-Insecure-Requests': '1',
'Origin': 'https://example.com',
'Host': 'example.com'}

url_data['verb'] = verb
url_data['url'] = url
url_data['params'] = params
url_data['headers'] = headers
data.append(url_data)

print (corsair_scan.corsair_scan(data, verify=True))
Response: {'report': [{'fake_origin': {'Access-Control-Allow-Origin': 'https://scarymonster.com',
'Origin': 'https://scarymonster.com',
'credentials': True,
'error': False,
'misconfigured': True,
'status_code': 200},
'post-domain': {'Access-Control-Allow-Origin': 'https://example.com.scarymonster.com',
'Origin': 'https://example.com.scarymonster.com',
'credentials': True,
'error': False,
'misconfigured': True,
'status_code': 200},
'pre-domain': {'Access-Control-Allow-Origin': 'https://scarymonsterexample.com',
'Origin': ' https://scarymonsterexample.com',
'creden tials': True,
'error': False,
'misconfigured': True,
'status_code': 200},
'sub-domain': {'Access-Control-Allow-Origin': 'https://scarymonster.example.com',
'Origin': 'https://scarymonster.example.com',
'credentials': True,
'error': False,
'misconfigured': True,
'status_code': 200},
'url': 'https://example.com/',
'verb': 'GET'}],
'summary': {'error': [], 'misconfigured': [{'credentials': True,
'misconfigured_test': ['fake_origin',
'sub-domain',
'pre-domain',

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'post-domain'],
'status_code': 200 ,
'url': 'https://domain.com',
'verb': 'GET'}]}}

Roadmap
Release corsair_scan as a CLI tool Read url data from a text file Improve reports format
Who Is Behind It?
Corsair_scan was developed by the Santander UK Security Engineering team who are: David Albone (https://github.com/dpauk) Javier Domínguez Ruiz (https://github.com/javixeneize) Fernando Cabrerizo (https://github.com/pealtrufo) Jonathan Strong (https://github.com/mrjonstrong) James Howieson (https://github.com/bal3r)

Download Corsair_Scan (https://github.com/Santandersecurityresearch/corsair_scan)

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Hacking on Medium
The Dark Side of NFTs

https://cdn-images-1.medium.com/max/2600/1*ZZ2xQ8qo64nGyj05Wl6cCg.jpeg
Continue reading on A New Blockchain World »

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