-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

                       AL-2007.0130 -- AUSCERT ALERT
                                   [Win]
        MS07-069 - Cumulative Security Update for Internet Explorer
                             12 December 2007

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

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

Product:              Internet Explorer 5.01, 6 SP1 and 7
Publisher:            Microsoft
Operating System:     Windows Vista
                      Windows Server 2003
                      Windows XP
                      Windows 2000
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-5347 CVE-2007-5344 CVE-2007-3903
                      CVE-2007-3902

Original Bulletin:
  http://www.microsoft.com/technet/security/bulletin/ms07-069.mspx

- --------------------------BEGIN INCLUDED TEXT--------------------

Microsoft Security Bulletin MS07-069 - Critical
Cumulative Security Update for Internet Explorer (942615)

This critical security update resolves four privately reported
vulnerabilities. The most serious security impact could allow remote code
execution if a user viewed 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.

The security update is rated moderate for Internet Explorer 6 and 7 on
Windows Server 2003. For all other supported releases of Internet Explorer,
this security update is rated critical.

The security update addresses these vulnerabilities by modifying the way
that Internet Explorer handles access to freed memory.


Affected Software

    Internet Explorer 5.01 and Internet Explorer 6 Service Pack 1	 	 	 	 
    Internet Explorer 7	 	 	 	 


Vulnerability Information
	
Uninitialized Memory Corruption Vulnerability
CVE-2007-3902

A remote code execution vulnerability exists in the way Internet Explorer
accesses an object that has not been correctly initialized or that 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.

Uninitialized Memory Corruption Vulnerability
CVE-2007-3903

A remote code execution vulnerability exists in the way Internet Explorer
accesses an object that has not been correctly initialized or that 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.

Uninitialized Memory Corruption Vulnerability
CVE-2007-5344

A remote code execution vulnerability exists in the way Internet Explorer
accesses an object that has not been correctly initialized or that 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.
	
DHTML Object Memory Corruption Vulnerability
CVE-2007-5347

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.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

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

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQCVAwUBR180Vih9+71yA2DNAQJF5QQAg0Eo2YBFRHeGjqxBajk0oBvz4iknXShc
z1ATMCNs8DH8u4unA7bcaZ0oaMCfBxL37y/RdLLCx9CIOvNa1KIQYBnGS2t85HFB
9fDy0vd/w3MhzyN7qgKJ2R1Miweb5baWX9UdE+PZmlZY8pMS3DQVR5Or1v7MJRPK
Oduo+g/XYNk=
=3qCn
-----END PGP SIGNATURE-----