XSS, CAPEC-86, CWE-79, www.jcpenny.com, Cross site Scripting

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Report generated by XSS.CX Research Blog at Sat Mar 05 11:20:47 CST 2011.


The DORK Report

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1. Cross-site scripting (reflected)

2. Cookie scoped to parent domain

3. Cookie without HttpOnly flag set

4. Cross-domain Referer leakage

4.1. http://www.jcpenney.com/jcp/JMetCap.aspx

4.2. http://www.jcpenney.com/jcp/getjcpheaderc.aspx

5. Cross-domain script include



1. Cross-site scripting (reflected)  next

Summary

Severity:   High
Confidence:   Certain
Host:   http://www.jcpenney.com
Path:   /jcp/getjcpheaderc.aspx

Issue detail

The value of the function request parameter is copied into a JavaScript expression which is not encapsulated in any quotation marks. The payload 4f9b5%3balert(1)//8a09436e575 was submitted in the function parameter. This input was echoed as 4f9b5;alert(1)//8a09436e575 in the application's response.

This proof-of-concept attack demonstrates that it is possible to inject arbitrary JavaScript into the application's response.

Remediation detail

Echoing user-controllable data within a script context is inherently dangerous and can make XSS attacks difficult to prevent. If at all possible, the application should avoid echoing user data within this context.

Issue background

Reflected cross-site scripting vulnerabilities arise when data is copied from a request and echoed into the application's immediate response in an unsafe way. An attacker can use the vulnerability to construct a request which, if issued by another application user, will cause JavaScript code supplied by the attacker to execute within the user's browser in the context of that user's session with the application.

The attacker-supplied code can perform a wide variety of actions, such as stealing the victim's session token or login credentials, performing arbitrary actions on the victim's behalf, and logging their keystrokes.

Users can be induced to issue the attacker's crafted request in various ways. For example, the attacker can send a victim a link containing a malicious URL in an email or instant message. They can submit the link to popular web sites that allow content authoring, for example in blog comments. And they can create an innocuous looking web site which causes anyone viewing it to make arbitrary cross-domain requests to the vulnerable application (using either the GET or the POST method).

The security impact of cross-site scripting vulnerabilities is dependent upon the nature of the vulnerable application, the kinds of data and functionality which it contains, and the other applications which belong to the same domain and organisation. If the application is used only to display non-sensitive public content, with no authentication or access control functionality, then a cross-site scripting flaw may be considered low risk. However, if the same application resides on a domain which can access cookies for other more security-critical applications, then the vulnerability could be used to attack those other applications, and so may be considered high risk. Similarly, if the organisation which owns the application is a likely target for phishing attacks, then the vulnerability could be leveraged to lend credibility to such attacks, by injecting Trojan functionality into the vulnerable application, and exploiting users' trust in the organisation in order to capture credentials for other applications which it owns. In many kinds of application, such as those providing online banking functionality, cross-site scripting should always be considered high risk.

Remediation background

In most situations where user-controllable data is copied into application responses, cross-site scripting attacks can be prevented using two layers of defenses:In cases where the application's functionality allows users to author content using a restricted subset of HTML tags and attributes (for example, blog comments which allow limited formatting and linking), it is necessary to parse the supplied HTML to validate that it does not use any dangerous syntax; this is a non-trivial task.

Request

GET /jcp/getjcpheaderc.aspx?function=getmenuitems4f9b5%3balert(1)//8a09436e575&ver=20110225&fx=3 HTTP/1.1
Host: www.jcpenney.com
Proxy-Connection: keep-alive
Referer: http://www.jcpenney.com/jcp/default.aspx
Accept: */*
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: stop_mobi=yes; AKJCP=CT-1

Response

HTTP/1.1 200 OK
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
P3P: CP="CAO DSP COR CURa DEVa PSAa IVAa OURa IND UNI NAV STA OTC"
Cache-Control: private
Expires: Sat, 26 Feb 2011 16:53:06 GMT
Content-Type: text/html; charset=utf-8
ntCoent-Length: 56
Date: Sat, 26 Feb 2011 04:53:06 GMT
Connection: close
Vary: Accept-Encoding
Content-Length: 56

Error function : getmenuitems4f9b5;alert(1)//8a09436e575

2. Cookie scoped to parent domain  previous  next

Summary

Severity:   Low
Confidence:   Firm
Host:   http://www.jcpenney.com
Path:   /jcp/banners.asp

Issue detail

The following cookie was issued by the application and is scoped to a parent of the issuing domain:The cookie appears to contain a session token, which may increase the risk associated with this issue. You should review the contents of the cookie to determine its function.

Issue background

A cookie's domain attribute determines which domains can access the cookie. Browsers will automatically submit the cookie in requests to in-scope domains, and those domains will also be able to access the cookie via JavaScript. If a cookie is scoped to a parent domain, then that cookie will be accessible by the parent domain and also by any other subdomains of the parent domain. If the cookie contains sensitive data (such as a session token) then this data may be accessible by less trusted or less secure applications residing at those domains, leading to a security compromise.

Issue remediation

By default, cookies are scoped to the issuing domain and all subdomains. If you remove the explicit domain attribute from your Set-cookie directive, then the cookie will have this default scope, which is safe and appropriate in most situations. If you particularly need a cookie to be accessible by a parent domain, then you should thoroughly review the security of the applications residing on that domain and its subdomains, and confirm that you are willing to trust the people and systems which support those applications.

Request

GET /jcp/banners.asp?siteID=INT030&url=http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=jcpenney&JCPReturnURL=http://www4.jcpenney.com/jcp/default.aspx HTTP/1.1
Host: www.jcpenney.com
Proxy-Connection: keep-alive
Referer: http://www4.jcpenney.com/jcp/x2.aspx?DeptID=70676&CatID=70676&cmAMS_T=G1&cmAMS_C=D6B&mscssid=61594d316179a4f548f577dab343a8538xMnVNoVza3oxMnVNoVza3W200B0A67BD19FE0DDB3BC3FE02796C1DAD4B1105702&cmAMS_V=
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: cmResetFlag=Y; cmCat=|RESET|homepage|RESET|homepage|RESET|homepage; JCPSession=ShopperID=60f3720e7c71e45edb02b68f7b004135cxMnVNoVza3oxMnVNoVza3W200B181A7FD6BCDF0818AD551CB2274291EC1105704&InitialShopperId=0f3720e7c71e45edb02b68f7b004135c&DateShopperIdAssigned=02/25/2011&ShopperType=XGN255; IsFirstTime=; JCPCluster=www4.jcpenney.com; stop_mobi=yes; AKJCP=3fBztb4pZ7Tf6L2HhgR4EKVxTpNnQSz5KgvkmBSB09OHel5cMR4Pj8Q

Response

HTTP/1.1 302 Moved Temporarily
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
P3P: CP='CAO DSP COR CURa DEVa PSAa IVAa OURa IND UNI NAV STA OTC'
Location: JMetCap.aspx?siteID=INT030&url=http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=jcpenney&JCPReturnURL=http://www4.jcpenney.com/jcp/default.aspx
Content-Length: 285
Content-Type: text/html
Expires: Sat, 26 Feb 2011 04:55:24 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache
Date: Sat, 26 Feb 2011 04:55:24 GMT
Connection: close
Vary: Accept-Encoding
Set-Cookie: JCPSession=ShopperID=60f3720e7c71e45edb02b68f7b004135cxMnVNoVza3oxMnVNoVza3W200B181A7FD6BCDF0818AD551CB2274291EC1105704&ShopperType=XGN255&DateShopperIdAssigned=02%2F25%2F2011&InitialShopperId=0f3720e7c71e45edb02b68f7b004135c; expires=Thu, 31-Dec-2015 05:00:00 GMT; domain=.jcpenney.com; path=/jcp

<head><title>Object moved</title></head>
<body><h1>Object Moved</h1>This object may be found <a HREF="JMetCap.aspx?siteID=INT030&amp;url=http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=j
...[SNIP]...

3. Cookie without HttpOnly flag set  previous  next

Summary

Severity:   Low
Confidence:   Firm
Host:   http://www.jcpenney.com
Path:   /jcp/banners.asp

Issue detail

The following cookie was issued by the application and does not have the HttpOnly flag set:The cookie appears to contain a session token, which may increase the risk associated with this issue. You should review the contents of the cookie to determine its function.

Issue background

If the HttpOnly attribute is set on a cookie, then the cookie's value cannot be read or set by client-side JavaScript. This measure can prevent certain client-side attacks, such as cross-site scripting, from trivially capturing the cookie's value via an injected script.

Issue remediation

There is usually no good reason not to set the HttpOnly flag on all cookies. Unless you specifically require legitimate client-side scripts within your application to read or set a cookie's value, you should set the HttpOnly flag by including this attribute within the relevant Set-cookie directive.

You should be aware that the restrictions imposed by the HttpOnly flag can potentially be circumvented in some circumstances, and that numerous other serious attacks can be delivered by client-side script injection, aside from simple cookie stealing.

Request

GET /jcp/banners.asp?siteID=INT030&url=http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=jcpenney&JCPReturnURL=http://www4.jcpenney.com/jcp/default.aspx HTTP/1.1
Host: www.jcpenney.com
Proxy-Connection: keep-alive
Referer: http://www4.jcpenney.com/jcp/x2.aspx?DeptID=70676&CatID=70676&cmAMS_T=G1&cmAMS_C=D6B&mscssid=61594d316179a4f548f577dab343a8538xMnVNoVza3oxMnVNoVza3W200B0A67BD19FE0DDB3BC3FE02796C1DAD4B1105702&cmAMS_V=
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: cmResetFlag=Y; cmCat=|RESET|homepage|RESET|homepage|RESET|homepage; JCPSession=ShopperID=60f3720e7c71e45edb02b68f7b004135cxMnVNoVza3oxMnVNoVza3W200B181A7FD6BCDF0818AD551CB2274291EC1105704&InitialShopperId=0f3720e7c71e45edb02b68f7b004135c&DateShopperIdAssigned=02/25/2011&ShopperType=XGN255; IsFirstTime=; JCPCluster=www4.jcpenney.com; stop_mobi=yes; AKJCP=3fBztb4pZ7Tf6L2HhgR4EKVxTpNnQSz5KgvkmBSB09OHel5cMR4Pj8Q

Response

HTTP/1.1 302 Moved Temporarily
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
P3P: CP='CAO DSP COR CURa DEVa PSAa IVAa OURa IND UNI NAV STA OTC'
Location: JMetCap.aspx?siteID=INT030&url=http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=jcpenney&JCPReturnURL=http://www4.jcpenney.com/jcp/default.aspx
Content-Length: 285
Content-Type: text/html
Expires: Sat, 26 Feb 2011 04:55:24 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache
Date: Sat, 26 Feb 2011 04:55:24 GMT
Connection: close
Vary: Accept-Encoding
Set-Cookie: JCPSession=ShopperID=60f3720e7c71e45edb02b68f7b004135cxMnVNoVza3oxMnVNoVza3W200B181A7FD6BCDF0818AD551CB2274291EC1105704&ShopperType=XGN255&DateShopperIdAssigned=02%2F25%2F2011&InitialShopperId=0f3720e7c71e45edb02b68f7b004135c; expires=Thu, 31-Dec-2015 05:00:00 GMT; domain=.jcpenney.com; path=/jcp

<head><title>Object moved</title></head>
<body><h1>Object Moved</h1>This object may be found <a HREF="JMetCap.aspx?siteID=INT030&amp;url=http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=j
...[SNIP]...

4. Cross-domain Referer leakage  previous  next
There are 2 instances of this issue:

Issue background

When a web browser makes a request for a resource, it typically adds an HTTP header, called the "Referer" header, indicating the URL of the resource from which the request originated. This occurs in numerous situations, for example when a web page loads an image or script, or when a user clicks on a link or submits a form.

If the resource being requested resides on a different domain, then the Referer header is still generally included in the cross-domain request. If the originating URL contains any sensitive information within its query string, such as a session token, then this information will be transmitted to the other domain. If the other domain is not fully trusted by the application, then this may lead to a security compromise.

You should review the contents of the information being transmitted to other domains, and also determine whether those domains are fully trusted by the originating application.

Today's browsers may withhold the Referer header in some situations (for example, when loading a non-HTTPS resource from a page that was loaded over HTTPS, or when a Refresh directive is issued), but this behaviour should not be relied upon to protect the originating URL from disclosure.

Note also that if users can author content within the application then an attacker may be able to inject links referring to a domain they control in order to capture data from URLs used within the application.

Issue remediation

The application should never transmit any sensitive information within the URL query string. In addition to being leaked in the Referer header, such information may be logged in various locations and may be visible on-screen to untrusted parties.


4.1. http://www.jcpenney.com/jcp/JMetCap.aspx  next

Summary

Severity:   Information
Confidence:   Certain
Host:   http://www.jcpenney.com
Path:   /jcp/JMetCap.aspx

Issue detail

The page was loaded from a URL containing a query string:The response contains the following link to another domain:

Request

GET /jcp/JMetCap.aspx?siteID=INT030&url=http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=jcpenney&JCPReturnURL=http://www4.jcpenney.com/jcp/default.aspx HTTP/1.1
Host: www.jcpenney.com
Proxy-Connection: keep-alive
Referer: http://www4.jcpenney.com/jcp/x2.aspx?DeptID=70676&CatID=70676&cmAMS_T=G1&cmAMS_C=D6B&mscssid=61594d316179a4f548f577dab343a8538xMnVNoVza3oxMnVNoVza3W200B0A67BD19FE0DDB3BC3FE02796C1DAD4B1105702&cmAMS_V=
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: cmResetFlag=Y; cmCat=|RESET|homepage|RESET|homepage|RESET|homepage; IsFirstTime=; JCPCluster=www4.jcpenney.com; JCPSession=ShopperID=60f3720e7c71e45edb02b68f7b004135cxMnVNoVza3oxMnVNoVza3W200B181A7FD6BCDF0818AD551CB2274291EC1105704&ShopperType=XGN255&DateShopperIdAssigned=02%2F25%2F2011&InitialShopperId=0f3720e7c71e45edb02b68f7b004135c; stop_mobi=yes; AKJCP=3fBztb4pZ7Tf6L2HhgR4EKVxTpNnQSz5KgvkmBSB09OHel5cMR4Pj8Q

Response

HTTP/1.1 302 Moved Temporarily
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
P3P: CP="CAO DSP COR CURa DEVa PSAa IVAa OURa IND UNI NAV STA OTC"
Location: http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=jcpenney&JCPReturnURL=http://www4.jcpenney.com/jcp/default.aspx
Content-Type: text/html; charset=utf-8
Content-Length: 246
Expires: Sat, 26 Feb 2011 04:55:24 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache
Date: Sat, 26 Feb 2011 04:55:24 GMT
Connection: close
Vary: Accept-Encoding

<html><head><title>Object moved</title></head><body>
<h2>Object moved to <a href="http://www.jcpstoreads.com/jcpenney/new_user_entry.aspx?adref=jcpenney&amp;JCPReturnURL=http://www4.jcpenney.com/jcp/default.aspx">here</a>
...[SNIP]...

4.2. http://www.jcpenney.com/jcp/getjcpheaderc.aspx  previous

Summary

Severity:   Information
Confidence:   Certain
Host:   http://www.jcpenney.com
Path:   /jcp/getjcpheaderc.aspx

Issue detail

The page was loaded from a URL containing a query string:The response contains the following link to another domain:

Request

GET /jcp/getjcpheaderc.aspx?function=getmenuitems&ver=20110225&fx=3 HTTP/1.1
Host: www.jcpenney.com
Proxy-Connection: keep-alive
Referer: http://www.jcpenney.com/jcp/default.aspx
Accept: */*
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: stop_mobi=yes; AKJCP=CT-1

Response

HTTP/1.1 200 OK
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
P3P: CP="CAO DSP COR CURa DEVa PSAa IVAa OURa IND UNI NAV STA OTC"
Cache-Control: private
Expires: Sat, 26 Feb 2011 10:11:17 GMT
Content-Type: text/html; charset=utf-8
Date: Sat, 26 Feb 2011 04:53:02 GMT
Connection: close
Vary: Accept-Encoding
Content-Length: 92490


       <div id="rptTabItem_ctl00_tab_items" class="tab_items">
           <div id="rptTabItem_ctl00_Div1" class="tab_items_body">
               
                       <div id="rptTabItem_ctl00_rptTabItemCol_ctl00_item_div" class="gn_n
...[SNIP]...
<li id="rptTabItem_ctl08_rptTabItemCol_ctl00_rptTabItemColList_ctl04_listItem" class="gn_nm_tab_items_body_list_cat">
                                           <a id="rptTabItem_ctl08_rptTabItemCol_ctl00_rptTabItemColList_ctl04_item" ID="item_4" class="gn_nm_tab_items_body_list_cat" href="http://www.modernbride.com/?cmAMS_T=G1&amp;cmAMS_C=D9">Engagement + Wedding</a>
...[SNIP]...

5. Cross-domain script include  previous

Summary

Severity:   Information
Confidence:   Certain
Host:   http://www.jcpenney.com
Path:   /jcp/default.aspx

Issue detail

The response dynamically includes the following script from another domain:

Issue background

When an application includes a script from an external domain, this script is executed by the browser within the security context of the invoking application. The script can therefore do anything that the application's own scripts can do, such as accessing application data and performing actions within the context of the current user.

If you include a script from an external domain, then you are trusting that domain with the data and functionality of your application, and you are trusting the domain's own security to prevent an attacker from modifying the script to perform malicious actions within your application.

Issue remediation

Scripts should not be included from untrusted domains. If you have a requirement which a third-party script appears to fulfil, then you should ideally copy the contents of that script onto your own domain and include it from there. If that is not possible (e.g. for licensing reasons) then you should consider reimplementing the script's functionality within your own code.

Request

GET /jcp/default.aspx HTTP/1.1
Host: www.jcpenney.com
Proxy-Connection: keep-alive
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: stop_mobi=yes

Response

HTTP/1.1 200 OK
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
P3P: CP="CAO DSP COR CURa DEVa PSAa IVAa OURa IND UNI NAV STA OTC"
Pragma: no-cache
Content-Type: text/html; charset=utf-8
ntCoent-Length: 33215
Cache-Control: no-cache
Expires: Sat, 26 Feb 2011 04:52:59 GMT
Date: Sat, 26 Feb 2011 04:52:59 GMT
Connection: close
Vary: Accept-Encoding
Content-Length: 33215


<SCRIPT LANGUAGE=Javascript>
<!--
function PopupWindow(pagename)
{
   var popWind;
   
   //Close the popup window if it's currently open
       if (popWind && (navigator.appName == "Microsoft Interne
...[SNIP]...
</script>
<script type="text/javascript" src="http://media.richrelevance.com/rrserver/js/0.4/p13n.js"></script>
...[SNIP]...

Report generated by XSS.CX Research Blog at Sat Mar 05 11:20:47 CST 2011.