bugtraq - TPTI-11-13: McAfee SaaS myCIOScn.dll Scan Method Script Injection Remote Code Execution Vulnerability

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Date: Mon, 8 Aug 2011 21:54:34 +0100
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>,
  "'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Subject: TPTI-11-13: McAfee SaaS myCIOScn.dll Scan Method Script Injection
 Remote Code Execution Vulnerability

TPTI-11-13: McAfee SaaS myCIOScn.dll Scan Method Script Injection Remote Code Execution Vulnerability

http://dvlabs.tippingpoint.com/advisory/TPTI-11-13

August 8, 2011

-- CVSS:
9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)

-- Affected Vendors:
McAfee  

-- Affected Products:
McAfee   Security-as-a-Service

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11561. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of McAfee Security-as-a-Service.  User
interaction is required to exploit this vulnerability in that the target
must visit a malicious page or open a malicious file.

The specific flaws exists within myCIOScn.dll. First, the
MyCioScan.Scan.ReportFile parameter exposed via ActiveX can be set to
any arbitrary filename including sensitive system files and directories.
Secondly, the parameter to the MyCioScan.Scan.Start() method can be
carefully crafted as to inject script constructs into the log file
written at the end of the AV scan. The combination of these flaws can be
leveraged by a remote attacker to execute arbitrary code under the
context of the user running the browser.

-- Vendor Response:
McAfee   has issued an update to correct this vulnerability. More
details can be found at:

https://kc.mcafee.com/corporate/index?page=content&amp;id=SB10016

-- Disclosure Timeline:
2011-01-24 - Vulnerability reported to vendor
2011-08-08 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Jonathan Andersson, TippingPoint DVLabs