I changed the title of the question because 'IDOR' may not be the first thing somebody googles for. Browse other questions tagged burp-suite or ask your own question. Hello hunters, In this blog, I will help you setup-up Autozie and Autorepeater to find IDORs with the help of Burp Suite, but first a little detail about What is IDOR? What is Insecure Direct.
A direct object reference occurs when a developer exposes a reference to an internal implementation object, such as a file, directory, database record, or key, as a URL or form parameter. An attacker can manipulate direct object references to access other objects without authorization, unless an access control check is in place.
In our example the application's authentication / authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
In this example we will demonstrate how to use Burp Intruder and Repeater to check for insecure direct object reference vulnerabilities. This tutorial uses an exercise from the 'Cyclone' training tool. The version of 'Cyclone' we are using is taken from OWASP's Broken Web Application Project. Find out how to download, install and use this project.
First, ensure that Burp is correctly configured with your browser.
With intercept turned off in the Proxy 'Intercept' tab, visit the web application you are testing in your browser.
Visit the page of the web application you are going to attack.
In this example log in to 'Cyclone' using the login details provided on the homepage.
Then click the 'My Bank Accounts' link from the 'Account' drop down menu.
Return to Burp.
In the Proxy 'Intercept' tab, ensure 'Intercept is on'.
In your browser, reload the page.
The request will be captured by Burp.
View the request in the Proxy 'Intercept' tab.
Right click on the raw request to bring up the context menu.
Click 'Send to Intruder.'
Note: You can also send requests to Intruder via the context menu in any location where HTTP requests are shown, such as the site map or Proxy history.
Go to the 'Intruder' tab, then the 'Positions' tab.
In our example the application's authentication / authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
In this example we will demonstrate how to use Burp Intruder and Repeater to check for insecure direct object reference vulnerabilities. This tutorial uses an exercise from the 'Cyclone' training tool. The version of 'Cyclone' we are using is taken from OWASP's Broken Web Application Project. Find out how to download, install and use this project.
First, ensure that Burp is correctly configured with your browser.
With intercept turned off in the Proxy 'Intercept' tab, visit the web application you are testing in your browser.
Visit the page of the web application you are going to attack.
In this example log in to 'Cyclone' using the login details provided on the homepage.
Then click the 'My Bank Accounts' link from the 'Account' drop down menu.
Return to Burp.
In the Proxy 'Intercept' tab, ensure 'Intercept is on'.
In your browser, reload the page.
The request will be captured by Burp.
View the request in the Proxy 'Intercept' tab.
Right click on the raw request to bring up the context menu.
Click 'Send to Intruder.'
Note: You can also send requests to Intruder via the context menu in any location where HTTP requests are shown, such as the site map or Proxy history.
Go to the 'Intruder' tab, then the 'Positions' tab.
Use the 'Clear' function to remove the preset payload positions..
Highlight the section of the URL that refers to an object. In this case the user number in the URL.
Use the 'Add' button on the right of the request editor to add the selected payload position.
Next, go to the 'Payloads' tab.
Here you can select a payload type to suit the attack you are implementing. In this case select 'Payload type:' 'Numbers' from the 'Payload Sets' options.
Beneath 'Payload Options 'you can choose the number range and increments.
In this example we are using the numbers 1-1000 in increments of 1.
Once you have tailored your attack, click the 'Start Attack' Button.
In the 'Intruder attack' window you can sort the results of the attack by a variety of means.
In this example we can use 'Status' and/or 'Length'.
The results are split quite clearly and provide us with means for further investigation.
To perform further investigation of interesting results, you can:
- Send the item to the Repeater tool, via the context menu.
- Copy the URL, via the context menu, and paste it into your browser.
- Explore the request and response in the attack window.
In this example we are able to examine the request and response in the 'Intruder attack' window.
Requests 1-100 (apart from the original user ID of 4) enumerate the user names of other accounts in the web application.
Additionally, you can use the 'Grep - Extract' function to add the user names to the results table.
Go to the 'Options' tab in the attack window.
Then locate the 'Grep - Extract' options and click the 'Add' button.
Here you can define the location of the item to be extracted from the HTTP response.
With the grep extraction configured, the results table will be populated with the defined items, in this example the usernames of other account holders.
You can use Burp Scanner alongside your manual testing methodology to quickly identify many types of common vulnerabilities.
File path traversal is one example of the Scanner's ability to locate issues of this nature.
Related articles:
Idor Burp Suite Free
June 4, 2019When it comes to web application security, we often focus on the more 'technical' vulnerabilities. Things like XSS, CSRF, SSRF, Serialization attacks, RCE, etc. However, more often than not, there are a multitude of vulnerabilities hiding in the business logic layer. An excellent example of this is Insecure Direct Object Reference (IDOR) attacks.
Idor Burp Suite Reviews
IDOR is a fancy name for a simple concept in web application security. Imagine the following endpoint in a web application.
Idor Burp Suite
/push.php?name=friendly_name&id=42496This example demonstrates a simple API endpoint that takes two GET parameters, 'name' and 'id'. The concern here is the 'id' exposed to the user. What would happen if we could changed this value? Could we submit data under a different id? Could we retrieve data? The threat of IDOR comes when the application does not properly check that the current user has the authority to modify that object.
Is Burp Suite Legal
How do we prevent this type of attack? Your first thought may be to use a UUID. UUIDs make it difficult to guess values (if the variable is 100, an attacker may try similar values; 99, 101, 102, etc.) and serve as an excellent abstraction from the actual object. The key issue here is that an attacker may attempt to leak this value through other attack vectors in your application.
While it may be a good idea to use some kind of abstractive value, the real solution is to validate that the current session has the access to make the request submitted. This way even if an attacker guesses another user's object reference, steals the abstracted value, or even steals the real one, their malicious request will not be processed.
What Is Burp Suite
When performing a penetration test or an application security assessment of a web application, IDOR attacks will often reveal themselves when using a proxy (like Burp Suite). If you notice a parameter that may be used to reference or control a query, you should test to ensure it cannot be used in an IDOR attack.
