TippingPoint Zero Day Initiative
 

(0Day) McAfee SaaS myCIOScn.dll ShowReport Method Remote Command Execution

ZDI-12-012: January 12th, 2012

CVSS Score

Affected Vendors

    McAfee

Affected Products

    Security-as-a-Service

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11710. For further product information on the TippingPoint IPS:

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. MyCioScan.Scan.ShowReport() will accept commands that are passed to a function that simply executes them without authentication. This can be leveraged by a malicious attacker to execute arbitrary code within the context of the browser.

Vendor Response

McAfee states:


This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 180 day deadline.

-- Mitigation:
The killbit can be set on this control to disable scripting within Internet Explorer by modifying the data value of the Compatibilty Flags DWORD within the following location in the registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX
Compatibility\209EBDEE-065C-11D4-A6B8-00C04F0D38B7

If the Compatibility Flags value is set to 0x00000400 the control can no longer be instantiated inside the browser. For more information, please see: http://support.microsoft.com/kb/240797


Disclosure Timeline

    2011-04-01 - Vulnerability reported to vendor
    2012-01-12 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Andrea Micalizzi aka rgod