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Webex Meeting Manager WebexUCFObject ActiveX Control Buffer Overflow
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Secunia Advisory:
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SA31397
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Release Date:
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2008-08-07
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Last Update:
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2008-08-18
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | WebEx Meeting Manager
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| | CVE reference: | CVE-2008-2737 (Secunia mirror)
CVE-2008-3558 (Secunia mirror)
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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:
An update should be applied automatically when visiting an upgraded WebEx meeting service server. Please see vendor advisory for further details.
Provided and/or discovered by:
Elazar Broad
Changelog:
2008-08-13: Added CVE reference.
2008-08-15: Updated "Solution" and "Original Advisory" sections. Added CVE reference.
2008-08-18: Added link to US-CERT.
Original Advisory:
Cisco:
http://www.cisco.com/warp/public/707/cisco-sa-20080814-webex.shtml
Elazar Broad:
http://lists.grok.org.uk/pipermail/full-disclosure/2008-August/063692.html
Other References:
US-CERT VU#661827:
http://www.kb.cert.org/vuls/id/661827
Extended Solution:
The "Extended Solution" section is available for Secunia customers only. Request a trial and get access to the Secunia Customer Area and Extended Secunia advisories.
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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