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Category:   Application (Generic)  >   Cisco WebEx Meetings Server Vendors:   Cisco, WebEx
Cisco WebEx Meetings Server Input Validation Flaws in Chrome/Firefox Browser Extensions Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1038911
SecurityTracker URL:
CVE Reference:   CVE-2017-6753   (Links to External Site)
Date:  Jul 17 2017
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to browser extension version 1.0.12
Description:   A vulnerability was reported in Cisco WebEx Meetings Server. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create specially crafted web content that, when loaded by the target user, will trigger a design flaw in the Cisco WebEx browser extensions for Google Chrome and Mozilla Firefox on Windows-based systems and execute arbitrary code on the target user's system. The code will run with the privileges of the web browser application.

The original advisory is available at:

The vendor has assigned bug ID CSCvf15020 to this vulnerability.

Tavis Ormandy of Google Project Zero and Cris Neckar of Divergent Security reported this vulnerability.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix (browser extension version 1.0.12 for Chrome, browser extension version 1.0.12 for Firefox).

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Input validation error
Underlying OS:  Windows (Any)

Message History:   None.

 Source Message Contents



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