Format String Vulnerability: FortiClient Version 3

2009.04.11
Risk: High
Local: Yes
Remote: No
CWE: CWE-134


CVSS Base Score: 7.2/10
Impact Subscore: 10/10
Exploitability Subscore: 3.9/10
Exploit range: Local
Attack complexity: Low
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

================================================== Layered Defense Research Advisory 02 April 2009 ================================================== 1) Affected Product FortiClient Version 3.0.614 Earlier versions may also be vulnerable ================================================== 2) Severity Rating: Low ================================================== 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. ================================================== 4) Solution : Upgrade to FortiClient v3.0 MR7 Patch Release 6 ================================================== 5) Time Table: 02/02/2009 Reported Vulnerability to Vendor. 02/03/2009 Vendor acknowledged the vulnerability 03/13/2009 Vendor published fix ================================================== 6) Credits Discovered by Deral Heiland, www.LayeredDefense.com ================================================== 7) Reference https://support.fortinet.com/Login/UserLogin.aspx ================================================== 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 ==================================================

References:

http://xforce.iss.net/xforce/xfdb/49633
http://www.vupen.com/english/advisories/2009/0941
http://www.securitytracker.com/id?1021966
http://www.securityfocus.com/archive/1/archive/1/502354/100/0/threaded
http://www.layereddefense.com/FortiClient02Apr.html
http://secunia.com/advisories/34524
http://osvdb.org/53266
http://lists.grok.org.uk/pipermail/full-disclosure/2009-April/068583.html


Vote for this issue:
50%
50%


 

Thanks for you vote!


 

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.


(*) - required fields.  
{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1
{{ x.comment }}

Copyright 2021, cxsecurity.com

 

Back to Top