DOINGSOFT-2008-02-11 - IPDiva VPN SSL Brute force attack

[eagle <eagle () ha ckers fr>]

ID : DOINGSOFT-2008-02-11-001


Discovered : 15/10/2007
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Corrected : 15/11/2007
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Publication :11/02/2008
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Affected Software  : IPDiva VPNSSL
Versions  :
         Users who autenticate with login et passwd without OTP systems
    * 2.2 branch < 2.2.8.84
    * 2.3 branch < 2.3.2.14
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Vulnerability :  Brute force attack

Description :
				The IPDiva Mediation server suffer of cookie exploitation  
vulnerability. A mecanism of limitation after a number of bad login/ 
passwd exist based on a cookie. When the cookie is null, the account  
is blocked. With the modification of the cookie to a value like 4242,   
we can try a unlimited number of connection if the cookie is resetted  
when it reached 2