Vulnerability Alert

Microsoft Internet Explorer Remote Information Disclosure Vulnerability

 
Threat Type:CWE-200: Information Leak / Disclosure
IntelliShield ID:19873
Version:3
First Published:2010 February 04 00:00 GMT
Last Published:2010 June 08 18:00 GMT
Port: Not available
CVE:CVE-2009-0217 , CVE-2010-0252 , CVE-2010-0255 , CVE-2010-0484 , CVE-2010-0485 , CVE-2010-0811 , CVE-2010-0817 , CVE-2010-0819 , CVE-2010-0821 , CVE-2010-0822 , CVE-2010-0823 , CVE-2010-0824 , CVE-2010-1245 , CVE-2010-1246 , CVE-2010-1247 , CVE-2010-1248 , CVE-2010-1249 , CVE-2010-1250 , CVE-2010-1251 , CVE-2010-1252 , CVE-2010-1253 , CVE-2010-1254 , CVE-2010-1255 , CVE-2010-1256 , CVE-2010-1257 , CVE-2010-1259 , CVE-2010-1260 , CVE-2010-1261 , CVE-2010-1262 , CVE-2010-1263 , CVE-2010-1264 , CVE-2010-1879 , CVE-2010-1880
BugTraq ID:38055 , 38056
Urgency:Weakness Found
Credibility:Confirmed
Severity:Harassment
CVSS Base:4.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.4
 
Version Summary:

Microsoft has released software updates that correct this vulnerability.

 
 
Description

Microsoft Internet Explorer contains a vulnerability that could allow an unauthenticated, remote attacker to disclose sensitive information.

The vulnerability is due to an unspecified error in Internet Explorer when the browser is not configured to run in Protected Mode.  An unauthenticated, remote attacker could obtain access to the contents of a file on a targeted user's system if the full path is known.  The attacker would first need to create a malicious website and convince a targeted user to view the website.

Proof-of-concept code is publicly available.

Microsoft has confirmed this vulnerability and released updated software.

 
Warning Indicators

The following products are vulnerable when not running in Protected Mode:

Internet Explorer version 5.01 SP4 and prior
Internet Explorer version 6.0 SP1 and prior
Internet Explorer version 7.0
Internet Explorer version 8.0

 
IntelliShield Analysis

To exploit the vulnerability, an attacker must persuade a targeted user to visit a malicious website.  This action will typically require the use of social engineering tactics, such as sending a link to the website by means of an e-mail message, instant messaging, or other form of communication.

Users of Windows Vista, Windows Server 2008, and Windows 7 are protected in the default configuration because Internet Explorer runs in Protected Mode by default on these systems.

The Cisco Applied Intelligence team has created an Applied Mitigation Bulletin to address vulnerabilities that Microsoft disclosed in the June 2010 security bulletin release. This Cisco bulletin, which assists administrators in identifying or mitigating these vulnerabilities using Cisco devices, is available at the following link: Cisco Applied Mitigation Bulletin: Microsoft Security Bulletin Release for June 2010

 
Vendor Announcements
Microsoft has released a security bulletin at the following link: MS10-035
 
Impact

An unauthenticated, remote attacker could exploit the vulnerability to access sensitive information.

 
Technical Information

The vulnerability is in the Internet Explorer HTML rendering engine, which uses URLMON when loading a local file.  The engine tries to check the MIME type of a file for a positive match.  However, if the file does not have a known type and is treated as HTML due to a redirection, the file type will default to text/html

An unauthenticated, remote attacker could exploit this vulnerability by creating a crafted web page with script that uses a dynamic OBJECT tag and is designed to load a local file that does not have an assigned MIME type as text/html.  An exploit could disclose the contents of the file to the attacker.  To exploit the vulnerability, the attacker must know the name and the full path of the file.

 
Safeguards

Administrators are advised to apply the appropriate updates.

Users are advised to run Internet Explorer in Protected Mode whenever possible.

Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.

Users should verify that unsolicited links are safe to follow.

 
Patches/Software
Microsoft customers can obtain updates directly by using the links in the security bulletin. These updates are also distributed by Windows automatic update features and available on the Windows Update website. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.

Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
23941/0Internet Explorer Information DisclosureS4672010 Feb 04 
26359/0Internet Explorer Zone BypassS4932010 Jun 08 
 
Alert History
 

Version 2, February 4, 2010, 11:50 AM: Additional technical information is available to describe the Microsoft Internet Explorer remote information disclosure vulnerability.  Proof-of-concept code is also available.

Version 1, February 3, 2010, 7:00 PM: Microsoft Internet Explorer contains a vulnerability that could allow an unauthenticated, remote attacker to disclose sensitive information.  Updates are not available.



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Microsoft, Inc.Internet Explorer 5.01 Base, SP1, SP2, SP3, SP4 | 6.0 Base, SP1 | 7.0 Base | 8.0 Base

Associated Products:
Microsoft, Inc.Windows 2000 Advanced Server Base, rev.2031, rev.2072, rev.2195, SP1, SP2, SP3, SP4 | Datacenter Server Base, SP1, SP2, SP3, SP4 | Professional Base, SP1, SP2, SP3, SP4 | Server Base, SP1, SP2, SP3, SP4
Microsoft, Inc.Windows 7 for 32-bit systems Base | for x64-based systems Base
Microsoft, Inc.Windows Server 2003 Datacenter Edition Base, SP1, SP2 | Datacenter Edition, 64-bit (Itanium) Base, SP1, SP2 | Datacenter Edition x64 (AMD/EM64T) Base, SP1, SP2 | Enterprise Edition Base, SP1, SP2 | Enterprise Edition, 64-bit (Itanium) Base, SP1, SP2 | Enterprise Edition x64 (AMD/EM64T) Base, SP1, SP2 | Standard Edition Base, SP1, SP2 | Standard Edition, 64-bit (Itanium) Base, SP1, SP2 | Standard Edition x64 (AMD/EM64T) Base, SP1, SP2 | Web Edition Base, SP1, SP2
Microsoft, Inc.Windows Server 2008 Datacenter Edition Base, SP1, SP2 | Datacenter Edition, 64-bit Base, SP1, SP2 | Itanium-Based Systems Edition Base, SP1, SP2 | Enterprise Edition Base, SP1, SP2 | Enterprise Edition, 64-bit Base, SP1, SP2 | Essential Business Server Standard Base, SP1, SP2 | Essential Business Server Premium Base, SP1, SP2 | Essential Business Server Premium, 64-bit Base, SP1, SP2 | Standard Edition Base, SP1, SP2 | Standard Edition, 64-bit Base, SP1, SP2 | Web Server Base, SP1, SP2 | Web Server, 64-bit Base, SP1, SP2
Microsoft, Inc.Windows Server 2008 R2 x64-Based Systems Edition Base | Itanium-Based Systems Edition Base
Microsoft, Inc.Windows Vista Home Basic Base, SP1, SP2 | Home Premium Base, SP1, SP2 | Business Base, SP1, SP2 | Enterprise Base, SP1, SP2 | Ultimate Base, SP1, SP2 | Home Basic x64 Edition Base, SP1, SP2 | Home Premium x64 Edition Base, SP1, SP2 | Business x64 Edition Base, SP1, SP2 | Enterprise x64 Edition Base, SP1, SP2 | Ultimate x64 Edition Base, SP1, SP2
Microsoft, Inc.Windows XP Home Edition Base, SP1, SP2, SP3 | Professional Edition Base, SP1, SP2, SP3 | Professional x64 (AMD/EM64T) Base, SP1, SP2




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
Powered by  IntelliShield