lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date: Fri, 26 Jan 2007 17:52:54 +0900
From: teracci2002@...oo.co.jp
To: bugtraq@...urityfocus.com
Subject: Movable Type <= 3.33 XSS Exploit

[Description]
MT (Movable Type) is a Blog software.
MT has a XSS filter to remove scripts from user inputs,
but there are ways to evade the filter using malformed input.

[Affected]
Movable Type <= 3.33

[Exploit]
By the default, Blog readers are allowed to post comments
containing html tags.

Attackers may post malformed comments as below.

1. NULL byte in number entitiy reference.
<A href="javascript&#5[0x00]8;alert();">link</A>

2. Unfinished tag in the tail of comment.
<P><BR style="xss:expression(alert())"

MT's filter fails to sanitize these comments.
Scripts in these comments may run in certain browsers
(maybe in IE ONLY).

[Impact]
- Cookies theft.
- Web pages defacing.

[Solution]
Upgrade MT to the newest version.
Six Apart fixed these problems in v3.34.

[Links]
http://www.sixapart.com/movabletype/beta/distros/MT-3.34-beta-Release-Notes.html
See #46226.

----
teracci2002@...oo.co.jp

Powered by blists - more mailing lists