Layered Defense Research Advisory: Format String Vulnerability: FortiClient Version 3

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Layered Defense Research Advisory 02 April 2009 
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1) Affected Product 
FortiClient Version 3.0.614
Earlier versions may also be vulnerable
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2) Severity Rating: Low 
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3) Description of Vulnerability: 
A local format string vulnerability was discovered within FortiClient version 
3.0.614 VPN .The vulnerability is due to improper processing of format strings 
specifiers within the VPN connection name. When special crafted format strings 
are entered as the VPN connection name and the connection is initiated the 
format string vulnerability is triggered. Making it possible to read and write 
arbitrary memory at System level. 
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4) Solution : Upgrade to FortiClient v3.0 MR7 Patch Release 6
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5) Time Table: 
02/02/2009 Reported Vulnerability to Vendor. 
02/03/2009 Vendor acknowledged the vulnerability 
03/13/2009 Vendor published fix
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6) Credits Discovered by Deral Heiland, www.LayeredDefense.com 
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7) Reference
https://support.fortinet.com/Login/UserLogin.aspx
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8) About Layered Defense Layered Defense, Is a group of security professionals 
that work together on ethical Research, Testing and Training within the 
information security arena. http://www.layereddefense.com
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