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A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2009.0047 -- AUSCERT ALERT
                                   [Win]
                 Internet Explorer: Execute Arbitrary Code
                               10 June 2009

===========================================================================

        AusCERT Alert Summary
        ---------------------

Product:              Internet Explorer
Publisher:            Microsoft
Operating System:     Windows 2000
                      Windows XP
                      Windows Server 2003
                      Windows Vista
                      Windows Server 2008
Impact:               Execute Arbitrary Code/Commands
                      Inappropriate Access
                      Read-only Data Access
Access:               Remote/Unauthenticated
CVE Names:            CVE-2009-1532 CVE-2009-1531 CVE-2009-1530
                      CVE-2009-1529 CVE-2009-1528 CVE-2009-1141
                      CVE-2009-1140 CVE-2007-3091

Original Bulletin:    
  http://www.microsoft.com/technet/security/Bulletin/MS09-019.mspx

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Microsoft Security Bulletin MS09-019 - Critical

Cumulative Security Update for Internet Explorer (969897)

   Published: June 9, 2009

   Version: 1.0

General Information

Executive Summary

   This security update resolves seven privately reported vulnerabilities 
   and one publicly disclosed vulnerability in Internet Explorer. The more 
   severe of the vulnerabilities could allow remote code execution if a 
   user views a specially crafted Web page using Internet Explorer. Users 
   whose accounts are configured to have fewer user rights on the system 
   could be less impacted than users who operate with administrative user 
   rights.

   This security update is rated Critical for Internet Explorer 5.01 and 
   Important for Internet Explorer 6 Service Pack 1, running on supported 
   editions of Microsoft Windows 2000; Critical for Internet Explorer 6, 
   Internet Explorer 7, and Internet Explorer 8 running on supported 
   editions of Windows XP and Windows Vista; and Moderate for Internet 
   Explorer 6, Internet Explorer 7, and Internet Explorer 8 running on 
   supported editions of Windows Server 2003 and Windows Server 2008. For 
   more information, see the subsection, Affected and Non-Affected 
   Software, in this section.

   The security update addresses these vulnerabilities by modifying the 
   way that Internet Explorer handles scripts and cached content and 
   initializes memory.


Affected Software
 
   Internet Explorer 5.01 Service Pack 4 when installed on 
   Microsoft Windows 2000 Service Pack 4
   Internet Explorer 6 Service Pack 1 when installed on 
   Microsoft Windows 2000 Service Pack 4
   Internet Explorer 6 for 
   Windows XP Service Pack 2 and 
   Windows XP Service Pack 3
   Internet Explorer 6 for 
   Windows XP Professional x64 Edition Service Pack 2
   Internet Explorer 6 for 
   Windows Server 2003 Service Pack 2
   Internet Explorer 6 for 
   Windows Server 2003 x64 Edition Service Pack 2
   Internet Explorer 6 for 
   Windows Server 2003 with SP2 for Itanium-based Systems
   Internet Explorer 7 for 
   Windows XP Service Pack 2 and 
   Windows XP Service Pack 3
   Internet Explorer 7 for 
   Windows XP Professional x64 Edition Service Pack 2
   Internet Explorer 7 for 
   Windows Server 2003 Service Pack 2
   Internet Explorer 7 for 
   Windows Server 2003 x64 Edition Service Pack 2
   Internet Explorer 7 for 
   Windows Server 2003 with SP2 for Itanium-based Systems
   Internet Explorer 7 in 
   Windows Vista, 
   Windows Vista Service Pack 1, and
   Windows Vista Service Pack 2
   Internet Explorer 7 in 
   Windows Vista x64 Edition,
   Windows Vista x64 Edition Service Pack 1, and
   Windows Vista x64 Edition Service Pack 2
   Internet Explorer 7 in 
   Windows Server 2008 for 32-bit Systems and
   Windows Server 2008 for 32-bit Systems Service Pack 2
   (Windows Server 2008 Server Core installation not affected)
   Internet Explorer 7 in 
   Windows Server 2008 for x64-based Systems and
   Windows Server 2008 for x64-based Systems Service Pack 2
   (Windows Server 2008 Server Core installation not affected)
   Internet Explorer 7 in 
   Windows Server 2008 for Itanium-based Systems and
   Windows Server 2008 for Itanium-based Systems Service Pack 2
   Internet Explorer 8 for 
   Windows XP Service Pack 2 and 
   Windows XP Service Pack 3
   Internet Explorer 8 for 
   Windows XP Professional x64 Edition Service Pack 2
   Internet Explorer 8 for 
   Windows Server 2003 Service Pack 2
   Internet Explorer 8 for 
   Windows Server 2003 x64 Edition Service Pack 2
   Internet Explorer 8 in 
   Windows Vista,
   Windows Vista Service Pack 1, and
   Windows Vista Service Pack 2
   Internet Explorer 8 in 
   Windows Vista x64 Edition,
   Windows Vista x64 Edition Service Pack 1, and
   Windows Vista x64 Edition Service Pack 2
   Internet Explorer 8 in 
   Windows Server 2008 for 32-bit Systems and
   Windows Server 2008 for 32-bit Systems Service Pack 2
   (Windows Server 2008 Server Core installation not affected)
   Internet Explorer 8 in 
   Windows Server 2008 for x64-based Systems and
   Windows Server 2008 for x64-based Systems Service Pack 2
   (Windows Server 2008 Server Core installation not affected)

Vulnerability Information

   Race Condition Cross-Domain Information Disclosure Vulnerability - 
   CVE-2007-3091

   An information disclosure vulnerability exists in Internet Explorer that 
   could allow script to gain access to the content in another browser 
   window in another domain or Internet Explorer zone. An attacker could 
   exploit the vulnerability by constructing a specially crafted Web page 
   that could allow information disclosure if a user viewed the Web page. 
   An attacker who successfully exploited this vulnerability could view 
   data from a Web page in another Internet Explorer domain

   Cross-Domain Information Disclosure Vulnerability - CVE-2009-1140

   An information disclosure vulnerability exists in the way that Internet 
   Explorer caches data and incorrectly allows the cached content to be 
   called, potentially bypassing Internet Explorer domain restriction. An 
   attacker could exploit the vulnerability by constructing a specially 
   crafted Web page that could allow information disclosure if a user 
   viewed the Web page. An attacker who successfully exploited this 
   vulnerability could view content from the local computer or another 
   browser window in another domain or Internet Explorer zone.

   DHTML Object Memory Corruption Vulnerability - CVE-2009-1141

   A remote code execution vulnerability exists in the way Internet 
   Explorer displays a Web page that contains certain unexpected method 
   calls to HTML objects. As a result, system memory may be corrupted in 
   such a way that an attacker could execute arbitrary code if a user 
   visited a specially crafted Web site. An attacker who successfully 
   exploited this vulnerability could gain the same user rights as the 
   logged-on user.

   HTML Object Memory Corruption Vulnerability - CVE-2009-1528

   A remote code execution vulnerability exists in the way Internet 
   Explorer accesses an object that has not been correctly initialized or 
   has been deleted. An attacker could exploit the vulnerability by 
   constructing a specially crafted Web page. When a user views the Web 
   page, the vulnerability could allow remote code execution. An attacker 
   who successfully exploited this vulnerability could gain the same user 
   rights as the logged-on user. If a user is logged on with 
   administrative user rights, an attacker who successfully exploited this 
   vulnerability could take complete control of an affected system. An 
   attacker could then install programs; view, change, or delete data; or 
   create new accounts with full user rights.

   Uninitialized Memory Corruption Vulnerability - CVE-2009-1529

   A remote code execution vulnerability exists in the way Internet 
   Explorer accesses an object that has not been correctly initialized or 
   has been deleted. An attacker could exploit the vulnerability by 
   constructing a specially crafted Web page. When a user views the Web 
   page, the vulnerability could allow remote code execution. An attacker 
   who successfully exploited this vulnerability could gain the same user 
   rights as the logged-on user. If a user is logged on with administrative 
   user rights, an attacker who successfully exploited this vulnerability 
   could take complete control of an affected system. An attacker could 
   then install programs; view, change, or delete data; or create new 
   accounts with full user rights.

   HTML Objects Memory Corruption Vulnerability - CVE-2009-1530

   A remote code execution vulnerability exists in the way Internet 
   Explorer accesses an object that has not been correctly initialized or 
   has been deleted. An attacker could exploit the vulnerability by 
   constructing a specially crafted Web page. When a user views the Web 
   page, the vulnerability could allow remote code execution. An attacker 
   who successfully exploited this vulnerability could gain the same user 
   rights as the logged-on user. If a user is logged on with administrative 
   user rights, an attacker who successfully exploited this vulnerability 
   could take complete control of an affected system. An attacker could 
   then install programs; view, change, or delete data; or create new 
   accounts with full user rights.

   HTML Object Memory Corruption Vulnerability - CVE-2009-1531

   A remote code execution vulnerability exists in the way Internet 
   Explorer accesses an object that has not been correctly initialized or 
   has been deleted. An attacker could exploit the vulnerability by 
   constructing a specially crafted Web page. When a user views the Web 
   page, the vulnerability could allow remote code execution. An attacker 
   who successfully exploited this vulnerability could gain the same user 
   rights as the logged-on user. If a user is logged on with administrative 
   user rights, an attacker who successfully exploited this vulnerability 
   could take complete control of an affected system. An attacker could 
   then install programs; view, change, or delete data; or create new 
   accounts with full user rights.

   HTML Object Memory Corruption Vulnerability - CVE-2009-1532

   A remote code execution vulnerability exists in the way Internet 
   Explorer accesses an object that has not been correctly initialized or 
   has been deleted. An attacker could exploit the vulnerability by 
   constructing a specially crafted Web page. When a user views the Web 
   page, the vulnerability could allow remote code execution. An attacker 
   who successfully exploited this vulnerability could gain the same user 
   rights as the logged-on user. If a user is logged on with administrative 
   user rights, an attacker who successfully exploited this vulnerability 
   could take complete control of an affected system. An attacker could 
   then install programs; view, change, or delete data; or create new 
   accounts with full user rights.

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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