Date: Wed, 15 Jun 2011 23:13:15 +0000
From: Yasser ABOUKIR <contact@...oukir.com>
To: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>, 
	"bugtraq@...urityfocus.com" <bugtraq@...urityfocus.com>
Subject: Oracle HTTP Server XSS Header Injection

---------------------------------------------------------------------------------------------------------
          Oracle HTTP Server XSS Header Injection
---------------------------------------------------------------------------------------------------------
# Attack Pattern ID  : CAPEC-86
# CWE ID             : CI-79
# OWASP IDs          : A1-Injections, A2-Cross Site Scripting (XSS)
# CVE ID             : not yet
# Related CVEs       : CVE-2006-3918, CVE-2007-0275
# A.K.A              : Unfiltered Header Injection
# Product Type       : Application
# Vendor             : Oracle Corporation
# Product            : Oracle HTTP Server for Oracle Application Server 10g
# Vulnerable Versions: 10.1.2.0.2
# Probably Vulnerable: (not tested) 10.1.2.0.0, 9.0.4.3.0, 9.0.4.2.0,
9.0.4.1.0, 9.0.4.0.0
# Severity           : Medium
# Tested on      : Linux, Windows Server 2003
# Download link      :
http://www.oracle.com/technetwork/middleware/ias/downloads/101201se-090616.html
# Date               : 12/06/2011
# Google Dork        : allintitle:"Oracle HTTP Server -"
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[-] Credit    : Yasser ABOUKIR
[-] Site      : http://www.yaboukir.com
[-] Email     : yaboukir@...il.com<script type="text/javascript">
/* <![CDATA[ */
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s,a,i,j,r,c,l=document.getElementById("__cf_email__");a=l.className;if(a){s='';r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCharCode(c);}s=document.createTextNode(s);l.parentNode.replaceChild(s,l);}}catch(e){}})();
/* ]]> */
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[-] Occupation: ITC security engineering student at ENSIAS - Morocco
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[+] Vulnerability description:
    The Oracle HTTP Server does not sanitize the Expect header from an HTTP
request when it is reflected back in an error message, which might allow
cross-site scripting (XSS) style attacks using web client components that
can send arbitrary headers in requests, as demonstrated using a Flash SWF
file.

[+] Vulnerability origin:
    Oracle HTTP Server (OHS) developed by Oracle Corporation is an OracleAS
10g's Web Server component.  The vulnerable product is based on the Apache
1.3 Web server.  This later is vulnerable to Unfiltered Header Injection
which makes the vulnerability’s origin of this OHS version.

[+] PoC:
  See the video in Youtube: www.youtube.com/watch?v=cBmbkAYXdjo
  See the PDF:
http://www.yaboukir.com/wp-content/bugtraq/XSS_Header_Injection_in_OHS_by_Yasser.pdf

[+] Attack:
    > Atack Prerequisites for a successful exploitation:
        Target software must be a client that allows scripting communication
from remote hosts. Crafting the attack to exploit this issue is not a
complex process. However most of the unsophisticated attackers will not know
that such an attack is possible. Also an attacker needs to reach his victims
by enticing them to visit remote site of some sort to redirect them and data
to.
    > Attacker Skills or Knowledge Required
        - Skill or Knowledge Level: Low
            To achieve a redirection and use of less trusted source, an
attacker can simply edit HTTP Headers that are sent to client machine.
            - Skill or Knowledge Level: High
            Exploiting a client side vulnerability to inject malicious
scripts into the browser's executable process.
    > Methods of Attack
        - Injection
        - Modification of Resources
        - Protocol Manipulation
    > Exploit:
        - Steal session IDs, credentials, page content, etc.:
 As the attacker succeeds in exploiting the vulnerability, he can choose to
steal user's credentials in order to reuse or to analyze them later on.
        - Forceful browsing:
When the attacker targets this Oracle application (through CSRF
vulnerabilities, Clickjacking), the user will then be the one who perform
the attacks without being aware of it.
        - Content spoofing:
By manipulating the content, the attacker targets the information that the
user would like to get from the Website.

[+]  Solution:
A solution to this issue might be the update/upgrade to the Oracle HTTP
Server 11g  which is based on Apache 2.2.  In fact, Oracle supports only the
code they ship with the Oracle Application Server 10g. Externally added
modules or other changes are not supported.  As a matter of fact, security
patches from the Apache organization in its latest versions
1.3.35/2.0.58/2.2.2 to this vulnerability onto Oracle HTTP Server should not
be applied.

[+] References:
  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3918
Oracle Application Server 10g Release 3 (10.1.3.1.0) Overview of Oracle HTTP
Server, An Oracle White Paper, October 2006
  http://seclists.org/Webappsec/2006/q2/245
  http://www.securiteam.com/securityreviews/5KP0M1FJ5E.html
  http://www.securityfocus.com/archive/1/441014
  http://kb2.adobe.com/cps/403/kb403030.html
  http://www.oracle.com/technetwork/middleware/ias/index-091236.html
  http://www.oracle.com/technetwork/middleware/ias/faq-089946.html

http://download.oracle.com/otndocs/tech/ias/portal/files/RG/complete_Web_site_ohs_faq.htm#OHS

http://xss.cx/http-header-injection-expect-response-splitting-cI-113-example-poc.aspx
http://www.cvedetails.com/vulnerability-list/vendor_id-93/product_id-707/opxss-1/Oracle-Application-Server.html

PDF Mirror:
http://www.exploit-db.com/sploits/XSS_Header_Injection_in_OHS_by_Yasser.pdf


-- 

Best regards,
Bien cordialement,
_____________________________________________________________________________

*Yasser ABOUKIR*

Élève-ingénieur à l'*ENSIAS* <http://www.ensias.ma/> - Rabat
Profile professionnel <http://ma.linkedin.com/in/yasseraboukir>
Blog personnel:   *www.yaboukir.com*
Phone: +212 6 69 60 64 82

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