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6
pentesting-web/content-security-policy-csp-bypass/README.md
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@ -487,6 +487,12 @@ CSP can be made more restrictive using **HTML meta tags** and inline scripts can
'sha256-Tz/iYFTnNe0de6izIdG%2bo6Xitl18uZfQWapSbxHE6Ic=';">
```
### JS exfiltration with Content-Security-Policy-Report-Only
If you can manage to make the server responds with the header **`Content-Security-Policy-Report-Only`** with a **value controlled by you** (maybe because of a CRLF), you could make it point your server and if you **wraps** the **JS content** you want to exfiltrate with **`<script>`** and because highly probable `unsafe-inline` isn't allowed by the CSP, this will **trigger a CSP error** and part of the script (containing the sensitive info) will be sent to the server from `Content-Security-Policy-Report-Only`.
For an example [**check this CTF writeup**](https://github.com/maple3142/My-CTF-Challenges/tree/master/TSJ%20CTF%202022/Nim%20Notes).
### [CVE-2020-6519](https://www.perimeterx.com/tech-blog/2020/csp-bypass-vuln-disclosure/)
```javascript

7
pentesting-web/xs-search.md
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@ -2,7 +2,6 @@
![](<../.gitbook/assets/image (9) (1) (2).png>)
\
Use [**Trickest**](https://trickest.com/?utm\_campaign=hacktrics\&utm\_medium=banner\&utm\_source=hacktricks) to easily build and **automate workflows** powered by the world's **most advanced** community tools.\
Get Access Today:
@ -15,7 +14,7 @@ Get Access Today:
* Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks\_live)**.**
* **Share your hacking tricks by submitting PRs to the** [**hacktricks repo**](https://github.com/carlospolop/hacktricks) **and** [**hacktricks-cloud repo**](https://github.com/carlospolop/hacktricks-cloud).
</details>
@ -647,7 +646,7 @@ According to [Chromium documentation](https://chromium.googlesource.com/chromium
Therefore if the **redirect URL responded is larger in one of the cases**, it's possible to make it redirect with a **URL larger than 2MB** to hit the **length limit**. When this happens, Chrome shows an **`about:blank#blocked`** page.
The **noticeable difference**, is that if the **redirect** was **completed**, `window.origin` throws an **error** because a cross origin cannot access that info. However, if the **limit** was **** hit and the loaded page was **`about:blank#blocked`** the window's **`origin`** remains that of the **parent**, which is an **accessible information.**
The **noticeable difference**, is that if the **redirect** was **completed**, `window.origin` throws an **error** because a cross origin cannot access that info. However, if the **limit** was \*\*\*\* hit and the loaded page was **`about:blank#blocked`** the window's **`origin`** remains that of the **parent**, which is an **accessible information.**
All the extra info needed to reach the **2MB** can be added via a **hash** in the initial URL so it will be **used in the redirect**.
@ -989,7 +988,7 @@ More generic methods:
* Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks\_live)**.**
* **Share your hacking tricks by submitting PRs to the** [**hacktricks repo**](https://github.com/carlospolop/hacktricks) **and** [**hacktricks-cloud repo**](https://github.com/carlospolop/hacktricks-cloud).
</details>