Net_IDNA 'index.php' Multiple Cross Site Scripting Vulnerabilities

Bugtraq ID:	62703
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	Sep 27 2013 12:00AM
Updated:	Sep 27 2013 12:00AM
Credit:	Alexandro Silva
Vulnerable:	phlyLabs Net_IDNA 0.8.0
Not Vulnerable:	phlyLabs Net_IDNA 0.8.1

Net_IDNA 'index.php' Multiple Cross Site Scripting Vulnerabilities

Net_IDNA is prone to multiple cross-site scripting vulnerabilities because it fails to sufficiently sanitize user-supplied input.

An attacker may leverage these issues to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and launch other attacks.

Net_IDNA 0.8.0 is vulnerable; other versions may also be affected.

Net_IDNA 'index.php' Multiple Cross Site Scripting Vulnerabilities

Attackers can exploit these issues by enticing an unsuspecting user to follow a malicious URI.

The following example URI is available:

http://www.example.com/idna_convert/index.php?decoded=94102%22%20onmouseover%3dprompt(929882)%20bad%3d%22&encode=Encode%20>>&idn_version=2003

Net_IDNA 'index.php' Multiple Cross Site Scripting Vulnerabilities

Solution:
Updates are available. Please see the references or vendor advisory for more information.

Net_IDNA 'index.php' Multiple Cross Site Scripting Vulnerabilities

References:

• [IBliss Security Advisory] Cross-site scripting ( XSS ) in PHP IDNA Convert (Alexandro Silva)
  
• Net_IDNA Product Page (phlyLabs)