illustration for Web Security Essentials: MITM, CSRF, and XSS

Course

Web Security Essentials: MITM, CSRF, and XSS

1
Course Overview: Web Security Essentials
4m 17s
2
Simulate Man in the Middle Attacks and Inspect Network Traffic with Charles Proxy
3m 1s
3
Add https to a Localhost Express App to Prevent MITM Attacks
2m 33s
4
Redirect All HTTP Traffic to HTTPS in Express to Ensure All Responses are Secure
2m 19s
5
Set the Secure Cookie Flag to Ensure Cookies are Only Sent Over Secure Connections
1m 35s
6
Add HSTS Headers to Express Apps to Ensure All Requests are https Requests
4m 15s
7
Create a Proof of Concept Exploit of a CSRF Vulnerable Website
4m 1s
8
Mitigate CSRF Attacks by Setting the SameSite Cookie Flag in Express
2m 46s
9
Add CSRF Token Middleware to an Express Server to Mitigate CSRF
6m 12s
10
Make an XSS Payload to Read a Cookie from a Vulnerable Website
3m 50s
11
Set the httpOnly Cookie Flag in Express to Ensure Cookies are Inaccessible from JavaScript
1m 27s
12
Make an XSS Payload to Read document.body from a Vulnerable Website
53s
13
Prevent Inline Script Execution by Implementing Script-Src CSP Headers in Express
5m 30s
14
Read Document Content from a Vulnerable Website via Script Tag Injection in an XSS Payload
1m 11s
15
Add a Nonce Based script-src Header in Express to Only Allow Scripts that Match the Nonce
3m 7s
16
Prompt Users for Credentials from a Vulnerable Website via iframe Injection
1m 36s
17
Add a default-src CSP Header in Express to Enforce an Allowlist and Mitigate XSS
2m 15s

Create a Proof of Concept Exploit of a CSRF Vulnerable Website

Mike Sherov

InstructorMike Sherov

Share this video with your friends

In this lesson, we'll learn what a Cross Site Request Forgery (CRSF) vulnerability is by learning how to exploit a CSRF vulnerable site by making malicious requests on behalf of a logged in user. We'll construct a malicious payload that automatically gets POSTed to the vulnerable site simply by visiting the attacker website while being logged into the target website.

Allen

~ 4 years ago

The cookie in the iframe won't work unless we'll add to the cookie object the property sameSite with the value "none"

Jeremiah Trein

Jeremiah Trein

~ 4 years ago

Yes, same as Allen. Seems the browser is handling this for me. I am using Chrome Version 87.0.4280.67

Jeremiah Trein

Jeremiah Trein

~ 4 years ago

Update: The instructor does make note of this "lax" default in browsers at the end of lesson #8.