[NT] Microsoft PowerPoint Remote Code Execution (MS06-028)
- From: SecuriTeam <support@xxxxxxxxxxxxxx>
- Date: 14 Jun 2006 12:28:08 +0200
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
- - promotion
The SecuriTeam alerts list - Free, Accurate, Independent.
Get your security news from a reliable source.
http://www.securiteam.com/mailinglist.html
- - - - - - - - -
Microsoft PowerPoint Remote Code Execution (MS06-028)
------------------------------------------------------------------------
SUMMARY
There is a remote code execution vulnerability in PowerPoint that uses a
malformed record. An attacker could exploit the vulnerability by
constructing a specially crafted PowerPoint file that could allow remote
code execution. 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. Users whose accounts are configured to have fewer user rights on
the system could be less affected than users who operate with
administrative user rights.
Vulnerability in Microsoft PowerPoint could allow remote code execution.
DETAILS
Vulnerable Systems:
* Microsoft Office 2000 Service Pack 3
* Microsoft PowerPoint 2000 -
<http://www.microsoft.com/downloads/details.aspx?FamilyId=F635F2CB-CFEE-4129-BB77-4779A3B05674> Download the update (KB916520)
* Microsoft Office XP Service Pack 3
* Microsoft PowerPoint 2002 -
<http://www.microsoft.com/downloads/details.aspx?FamilyId=60A1EB9F-F04B-4D21-A95E-CCC90D9782AB> Download the update (KB916519)
* Microsoft Office 2003 Service Pack 1 or Service Pack 2
* Microsoft PowerPoint 2003 -
<http://www.microsoft.com/downloads/details.aspx?FamilyId=FCED8804-45B4-4FD2-8FDB-4960C5BB8954> Download the update (KB916518)
* Microsoft Office 2004 for Mac
* Microsoft PowerPoint 2004 for Mac - <http://www.microsoft.com/mac/>
Download the update (KB918963)
* Microsoft Office v. X for Mac
* Microsoft PowerPoint v. X for Mac - <http://www.microsoft.com/mac/>
Download the update (KB918963)
Mitigating Factors for Microsoft PowerPoint Remote Code Execution Using a
Malformed Record Vulnerability:
* An attacker who successfully exploited this vulnerability could gain
the same user rights as the local user. 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 vulnerability could not be exploited automatically through e-mail.
For an attack to be successful a user must open an attachment that is sent
in an e-mail message.
* When running Office XP and Office 2003, this vulnerability could not be
exploited automatically through a Web-based attack scenario. An attacker
would have to host a Web site that contains an Office file that is used to
attempt to exploit this vulnerability. An attacker would have no way to
force users to visit a malicious Web site. Instead, an attacker would have
to persuade them to visit the Web site, typically by getting them to click
a link that takes them to the attacker's site.
Note While this vulnerability could not be exploited automatically when
visiting a Web site using Word 2000, Office 2000 does not prompt the user
to Open, Save, or Cancel before opening a document.
Workarounds for Microsoft PowerPoint Remote Code Execution Using a
Malformed Record Vulnerability:
Microsoft has tested the following workarounds. While these workarounds
will not correct the underlying vulnerability, they help block known
attack vectors. When a workaround reduces functionality, it is identified
in the following section.
Do not open or save Microsoft PowerPoint files that you receive from
un-trusted sources.
This vulnerability could be exploited when a user opens a file.
FAQ for Microsoft PowerPoint Remote Code Execution Using a Malformed
Record Vulnerability:
What is the scope of the vulnerability?
This is a remote code execution vulnerability. An attacker who
successfully exploited this vulnerability could remotely take complete
control of an affected system.
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. Users whose
accounts are configured to have fewer user rights on the system could be
less affected than users who operate with administrative user rights.
What causes the vulnerability?
When PowerPoint opens a specially crafted PowerPoint file using a
malformed record, it may corrupt system memory in such a way that an
attacker could execute arbitrary code.
What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could take
complete control of the affected system.
How could an attacker exploit the vulnerability?
In a Web-based attack scenario, an attacker would have to host a Web site
that contains an Office file that is used to attempt to exploit this
vulnerability. An attacker would have no way to force users to visit a
malicious Web site. Instead, an attacker would have to persuade them to
visit the Web site, typically by getting them to click a link that takes
them to the attacker's site.
In an e-mail attack scenario, an attacker could exploit the vulnerability
by sending a specially crafted file to the user and by persuading the user
to open the file.
Could I automatically be exploited when visiting a Web site using
PowerPoint 2000?
While this vulnerability could not be exploited automatically when
visiting a Web site using PowerPoint 2000, Office 2000 does not prompt the
user to Open, Save, or Cancel before opening a document.
What systems are primarily at risk from the vulnerability?
Workstations and terminal servers are primarily at risk. Servers could be
at more risk if users who do not have sufficient administrative
permissions are given the ability to log on to servers and to run
programs. However, best practices strongly discourage allowing this.
What does the update do?
The update removes the vulnerability by modifying the way that PowerPoint
validates the length of a message before it passes the message to the
allocated buffer.
When this security bulletin was issued, had this vulnerability been
publicly disclosed?
No. Microsoft received information about this vulnerability through
responsible disclosure. Microsoft had not received any information to
indicate that this vulnerability had been publicly disclosed when this
security bulletin was originally issued.
When this security bulletin was issued, had Microsoft received any reports
that this vulnerability was being exploited?
No. Microsoft had not received any information to indicate that this
vulnerability had been publicly used to attack customers and had not seen
any examples of proof of concept code published when this security
bulletin was originally issued.
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0022>
CVE-2006-0022
ADDITIONAL INFORMATION
The information has been provided by Microsoft Security.
The original article can be found at:
<http://www.microsoft.com/technet/security/bulletin/ms06-028.mspx>
http://www.microsoft.com/technet/security/bulletin/ms06-028.mspx
========================================
This bulletin is sent to members of the SecuriTeam mailing list.
To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@xxxxxxxxxxxxxx
In order to subscribe to the mailing list, simply forward this email to: list-subscribe@xxxxxxxxxxxxxx
====================
====================
DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any kind.
In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.
- Prev by Date: [NT] Microsoft Routing and Remote Access Code Execution Vulnerabilities (MS06-025)
- Next by Date: [NT] Microsoft JScript Remote Code Execution (MS06-023)
- Previous by thread: [NT] Microsoft Routing and Remote Access Code Execution Vulnerabilities (MS06-025)
- Next by thread: [NT] Microsoft JScript Remote Code Execution (MS06-023)
- Index(es):
Relevant Pages
|
