Advisory Details

January 12th, 2012

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

ZDI-12-012
ZDI-CAN-1094

CVE ID
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
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: 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. 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 Andrea Micalizzi aka rgod
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