[NEWS] <BODY>Builder SQL modification
From: support@securiteam.comDate: 06/18/02
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From: support@securiteam.com To: list@securiteam.com Date: Tue, 18 Jun 2002 22:42:35 +0200 (CEST)
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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<BODY>Builder SQL modification
------------------------------------------------------------------------
SUMMARY
<Body>Builder is a site building engine by Ruslan Communications written
in Java. It allows administrative access via http://site/Admin. All
accounts are stored in database and accessed via SQL. A security
vulnerability in the username and password validation allows user to
modify SQL statement, allowing them to access administrative interface
without a valid username or password.
DETAILS
Exploitation:
Use login='-- and pass='--
Solution:
Edit _login__jsp.java:
-- cut --
java.lang.String _jspParam;
_jspParam = request.getParameter("username");
if (_jspParam != null && ! _jspParam.equals("") &&
_checkvalue(_jspParam) )
Log.setUsername(_jspParam);
_jspParam = request.getParameter("password");
if (_jspParam != null && ! _jspParam.equals("") &&
_checkvalue(_jspParam) )
Log.setPassword(_jspParam);
--cut--
Add new function called _checkvalue
public static boolean _checkvalue(java.lang.String _value)
{
int count;
char temp;
for (count=0;count<_value.length();count++)
{
temp=_value.charAt(count);
if (temp=='\'' ) return false;
}
return true;
}
Vendor status:
Vendor was notified via e-mail but no response has been received.
ADDITIONAL INFORMATION
The information has been provided by mam0nt.
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