From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Oct 07 2004 - 10:20:51 CDT

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TITLE:
Neoteris IVE changepassword.cgi Brute Force Weakness

SECUNIA ADVISORY ID:
SA12752

VERIFY ADVISORY:
http://secunia.com/advisories/12752/

CRITICAL:
Not critical

IMPACT:
Brute force

WHERE:
From remote

OPERATING SYSTEM:
Neoteris Instant Virtual Extranet (IVE) 3.x
http://secunia.com/product/1558/
Neoteris Instant Virtual Extranet (IVE) 4.x
http://secunia.com/product/4014/

DESCRIPTION:
Jian Hui Wang has reported a weakness in Neoteris IVE, which can be
exploited by malicious people to potentially brute force a user's
password.

The problem is that a person is forwarded directly to the
"changepassword.cgi" CGI script when attempting to log in with a
valid username to which the password is expired.

Since there is no restriction on the amount of retries when
attempting to change the user's password, a malicious person may be
able to guess the old password and thereby gain access after setting
a new password.

Successful exploitation requires knowledge of a valid username with
an expired password. Also, the IVE product has to be configured with
a LDAP or NT domain authentication server.

SOLUTION:
Apply patch (see the vendor's advisory).

PROVIDED AND/OR DISCOVERED BY:
Jian Hui Wang, GoSecure.

ORIGINAL ADVISORY:
Juniper Networks:
http://www.juniper.net/alerts/viewalert.jsp?actionBtn=Seach&txtAlertNumber=PSN-2004-08-25&viewMode=view

GoSecure:
http://www.gosecure.ca/SecInfo/gosecure-2004-10.txt

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