bugtraq - SAP Internet Communication Framework (BC-MID-ICF) Vulnerability

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Date: Wed, 27 Jun 2007 09:03:39 +0200
From: "Ivan Buetler" <ivan.buetler@...c.ch>
To: <bugtraq@...urityfocus.com>
Subject: SAP Internet Communication Framework (BC-MID-ICF)  Vulnerability

#############################################################
#
# COMPASS SECURITY ADVISORY http://www.csnc.ch/ 
# 
#############################################################
#
# Product: Internet Communication Framework (BC-MID-ICF) 
# Vendor:  SAP 
# Subject: Multiple XSS, HTML Injection
# Risk:    High
# Effect:  Remotely exploitable
# Author:  Cyrill Brunschwiler (cyrill.brunschwiler@...c.ch)
# Date:    June, 17th 2007
#
#############################################################

Introduction:
-------------
Compass Security discovered multiple web application security flaws in
the SAP Internet Communication Framework (BC-MID-ICF).

Vulnerable:
-----------
SAP Basis component 640 SP19 and lower
SAP Basis component 700 SP11 and lower

Not vulnerable:
---------------
Customers which registered a customized login error page for SIFC
transactions (e.g. for default_host) may not suffer this vulnerability. 

SAP Basis component 640 SP20
SAP Basis component 700 SP12


Vulnerability Management:
-------------------------
October 2006: Vulnerability found
October 2006: SAP Security notified
November 2007: SAP confirmation
April/May 2007: Patches available
June 2007: Compass Security Information


SAP Information Policy:
-------------------------
The information is available to registered SAP clients only (SAP
Security Notes)


Patches:
--------
Available at SAP (See SAP Note No. 1022102).

Description
-----------
The default login error page reflects unfiltered user input for multiple
fields. Exploting the vulnerability will lead to so-called cross-site
scripting (XSS).

XSS Ref: http://en.wikipedia.org/wiki/Cross-site_scripting

Cross-site scripting (XSS) is a type of computer security vulnerability
typically found in web applications which allow code injection by
malicious web users into the web pages viewed by other users. Examples
of such code include HTML code and client-side scripts. An exploited
cross-site scripting vulnerability can be used by attackers to bypass
access controls such as the same origin policy. Recently,
vulnerabilities of this kind have been exploited to craft powerful
phishing attacks and browser exploits. Cross-site scripting was
originally referred to as CSS, although this usage has been largely
discontinued.