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TITLE:
Webex Meeting Manager WebexUCFObject ActiveX Control Buffer Overflow

SECUNIA ADVISORY ID:
SA31397

VERIFY ADVISORY:
http://secunia.com/advisories/31397/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
WebEx Meeting Manager
http://secunia.com/product/3003/

DESCRIPTION:
Elazar Broad has discovered a vulnerability in Webex Meeting Manager,
which can be exploited by malicious people to compromise a user's
system.

The vulnerability is caused due to a boundary error within the
WebexUCFObject ActiveX control (atucfobj.dll) when handling arguments
passed to the "NewObject()" method. This can be exploited to cause a
stack-based buffer overflow by passing an overly long string as
argument to the affected method.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in version 20.2008.2601.4928. Other
versions may also be affected.

SOLUTION:
The vendor has reportedly fixed the vulnerability in version
20.2008.2606.4919.

PROVIDED AND/OR DISCOVERED BY:
Elazar Broad

ORIGINAL ADVISORY:
http://lists.grok.org.uk/pipermail/full-disclosure/2008-August/063692.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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