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Oracle.com Cross Site Scripting

Oracle.com Cross Site Scripting
Posted Apr 6, 2015
Authored by Yann CAM

Oracle.com suffered from a cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | 6c4b6e99ca086b5b03c0f64ae43d2959fece8ee22e1ed5f22a41e02102ac10d6

Oracle.com Cross Site Scripting

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######################################################################
# Exploit Title: Oracle.com sub-domain Reflected Cross-Site Scripting (RXSS)
# Date: 04/04/2014
# Author: Yann CAM @ Synetis - ASafety
# Vendor or Software Link: www.oracle.com
# Version: /
# Category: Reflected Cross Site Scripting
# Google dork:
# Tested on: Oracle.com dne sub-domain
######################################################################

Oracle description :
======================================================================

The Oracle Corporation is an American multinational computer technology corporation headquartered in Redwood City, California, United States. The company specializes in
developing and marketing computer hardware systems and enterprise software products – particularly its own brands of database management systems. As of 2011, Oracle is
the second-largest software maker by revenue, after Microsoft.

The company also builds tools for database development and systems of middle-tier software, enterprise resource planning (ERP) software, customer relationship
management (CRM) software and supply chain management (SCM) software.


Vulnerability description :
======================================================================

A reflected XSS is available in the dne.oracle.com sub-domain.
Through this vulnerability, an attacker could tamper with page rendering, redirect victims to fake Oracle portals, or capture Oracle's users credentials such cookies.
This reflected XSS is on GET "elq" variable and is not properly sanitized before being used to his page.


Proof of Concept :
======================================================================

A non-persistent XSS (RXSS) in "elq" GET param is available in the dne.oracle.com sub-domain during the unsubscribe mailing-list process.
Tested on Firefox 33.1.1.

Email received through mailing-list contains an "unsubscribe link" in footer. This link points to the dne.oracle.com domain with a token
corresponding to the target user (elq GET param). This token isn't properly sanitized before being reused in the page.

PoC:

https://dne.oracle.com/pls/uns/OPT_OUT.th?elq_mid=5038&sh=&cmid=EMEAFM14042899MPP002C001&l_code=fr&elq=4c31b8602999476b9d88c2e2fb31ff40" /><script>alert(/Reflected XSS - Yann CAM @ASAfety - www.synetis.com/)</script>&elqCampaignId=5833


Screenshots :
======================================================================

- http://www.asafety.fr/data/20140825-oracle_XSS2.png


Solution:
======================================================================

Fixed by Oracle security team.


Additional resources / article and screenshots :
======================================================================

- http://www.oracle.com/
- http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
- http://www.asafety.fr/vuln-exploit-poc/contribution-oracle-reflected-xss-vulnerabilite
- http://www.synetis.com


Report timeline :
======================================================================

2014-08-25 : Oracle security team alerted with details and PoC.
2014-10-27 : Oracle response and ack.
2014-10-27 : Confirmation of the fix to Oracle.
2015-04-04 : ASafety public article
2015-04-04 : Public advisory

Credits :
======================================================================

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Yann CAM - Security Consultant @ Synetis | ASafety

--
SYNETIS | ASafety
CONTACT: www.synetis.com | www.asafety.fr
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