Engeman 6.x.x SQL Injection

`Engeman is a Brasilian software for maintenance control.   
  
Version tested: 6.x.x and prior. Next versions appears vulnerable too.  
  
The attacker can inject sql codes in username textbox:  
  
SQL dump affter injection:  
  
select nome,senha,diasexp,dataltsen,permitetroca from cfgusr where nome='NULL' OR NOME<>'1'  
  
select nomegrupo from cfgusr where ignoragrupo='N' and nome='NULL' OR NOME='1'  
  
In firebird the attack have a low impact, but in SQL Server may compromisse the server.  
  
**** The version tested is a made in DELPH language, NOT is a Web Software! ****  
  
Vendor site: www.engeman.com.br.  
  
Plase, give the credits to: Crash and _Sl0t_ - DcLabs  
  
Trank´s.  
`