Question

403: Cross Site Scripting

Asked by: wmc_ba

Hi,
I'm using CF5 on IIS4 and need to pass across a odbc Date object in a URL....
http://blah.blah?selDate={ts%20'2002-01-01%2000:00:00'}

I know that the single quote is being filtered out as a bad character and I'm getting an error

403: Access Forbidden
Due to the presence of characters known to be used in Cross Site Scripting attacks, access is forbidden. This web site does not allow Urls which might include embedded HTML tags.

Is there any way to allow single quotes in the URL ??
I know I could recode the quote to another character and then recode back to quote on the destination page....but I have reasons for not doing that.

Thanks

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Asked On
2002-10-18 at 01:45:22ID20376223
Tags

scripting

,

access

,

cross

Topic

ColdFusion Application Server

Participating Experts
4
Points
75
Comments
6

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Answers

 

by: anandkpPosted on 2002-10-18 at 02:47:49ID: 7343880

Hi there,

I dont think its bcos of the singel quotes

i have a page with the following code :
<!--- Anand K Patel --->
<cfoutput>
#akp#
</cfoutput>

& i call this page on my local machine with the following url : http://192.168.3.167/caro/SiteBuilder/akp.cfm?akp={ts%20'2002-01-01%2000:00:00'}

to ur surprise u'll see that - it works perfectly

try it & let em know ...

I think the problem with ur code is somewhere else & not as mentioend above ...

K'Rgds
Anand

 

by: MartinCSuttonPosted on 2002-10-18 at 06:02:12ID: 7344346

Try:

Store the timestamp in a variable and then:

http://blah.blah?selDate=#URLEncodedFormat(myvar)#

On the receiving template use URLDecode() to retrieve the value.

URLEncodedFormat() and it's sister tag URLDecode() are used to convert special characters (non alphanumeric) into their hexadecimal equivalent escape sequence.  As you will of undoubtedly seen, when using this conversion a space is represented as %20 for example.

The server is obviously configured not to allow special URL characters, if the above doesn't work, post again here and let me know, there might be other ways around this.  What about using Encrypt() around the variable which will encrypt (suprisingly!) the string according to a key which you can specify.  Note however that when doing this, both templates must contain the key in a variable in order to Decrypt()?

Cheers,

Martin.

PS.  Anand, the server is configured not to allow HTML characters of which a single quote might be considered to be.  Thats why he's getting the error, it works fine on my machine too ;)

 

by: MartinCSuttonPosted on 2002-11-01 at 07:52:50ID: 7396884

Any progress on this question at all?

 

by: JgouldPosted on 2002-11-17 at 15:48:07ID: 7461194

Dear MartinCSutton


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Paragraph: Site Update for Wednesday, November 06, 2002

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by: mrichmonPosted on 2004-04-16 at 15:27:26ID: 10846527

No comment has been added lately, so it's time to clean up this question.
I will leave the following recommendation in the Cleanup topic area:

Accept MartinCSutton

Please leave any comments here within the next four days.

mrichmon
EE Cleanup Volunteer

20120131-EE-VQP-002

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