WebEx Meeting Manager WebexUCFObject ActiveX Control Buffer Overflow

This script is Copyright (C) 2008-2016 Tenable Network Security, Inc.


Synopsis :

The remote Windows host has an ActiveX control that is affected by a
buffer overflow vulnerability.

Description :

The atucfobj module of the WebexUCFObject ActiveX control, used by
WebEx Meeting Manager and installed on the remote host, reportedly
contains a stack-based buffer overflow in its 'NewObject()' method.
If an attacker can trick a user on the affected host into viewing a
specially crafted HTML document, this method could be used to execute
arbitrary code on the affected system, subject to the user's
privileges.

See also :

http://seclists.org/fulldisclosure/2008/Aug/83
http://www.nessus.org/u?63ee1aec
http://seclists.org/fulldisclosure/2008/Aug/322

Solution :

One solution is to confirm that the WebEx Meeting Service is running a
fixed version of the software based on the instructions in Cisco's
advisory, join a meeting or manually update the Meeting Manager
client, and ensure that version 20.2008.2606.4919 of the control
itself is installed.

Another is to remove the software as described in Cisco's advisory.

A third is to set the control's kill bit, again, as described in
Cisco's advisory.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.1
(CVSS2#E:H/RL:OF/RC:C)
Public Exploit Available : true

Family: Windows

Nessus Plugin ID: 33859 ()

Bugtraq ID: 30578

CVE ID: CVE-2008-3558

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