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

ID : DOINGSOFT-2008-02-11-001

Discovered : 15/10/2007

Corrected : 15/11/2007

Publication :11/02/2008

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

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