Kaseya VSA version 6.5.0.0 suffers from cross site scripting and brute forcing vulnerabilities.
422ace8363b61c9858ef75bd8a974044https://www.osisecurity.com.au/kaseya-parameter-reflected-xss-enumeration-and-bruteforce-weakness.html
Date:
04-Apr-2017
Software:
Kaseya
Affected version:
Kaseya VSA v6.5.0.0.
Vulnerability details:
1. The "forgot password" function at https://[target]/access/logon.asp
reveals whether a username is valid/exists or not, which assists with
brute force attacks. An incorrect username responds with aNo record of
this user existsa, where a valid username returns aThe system emailed
you a link. Visit it to change your password.a
This makes it much easier to brute force accounts.
2. The password reset URL, such as
https://[target]/access/resetAccount.asp?id=26756180, is not
significantly complex to prevent brute force attacks. The software
should use a GUID (5.3A10^36 combinations) globally unique value
instead to prevent brute force. The server response permits data
matching to ascertain whether a guessed id value is valid or not.
3. The URL at https://[target]/access/accessRoot.asp?page=logon.asp
contains a cross-site scripting vulnerability. Authentication cookies
may be stolen or malicious HTML or JavaScript etc injected to abuse
the client web browser.
Examples:
https://[target]/access/accessRoot.asp?page=http://www.osisecurity.com.au/
https://[target]/access/accessRoot.asp?page=javascript:alert(document.cookie);/
References:
http://help.kaseya.com/webhelp/EN/RN/index.asp#30773.htm
Credit:
Vulnerability discovered by Patrick Webster
Disclosure timeline:
20-Aug-2014 - Discovered during audit.
24-Aug-2014 -Sent to vendor.
25-Aug-2014 - Vendor response.
15-Oct-2014 - Vendor partially patched. Additional fixes due in 2
weeks. version 6.5.0.22+.
04-Apr-2017 - Public disclosure.
About OSI Security:
OSI Security is an independent network and computer security auditing
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and external penetration testing, vulnerability auditing and wireless
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