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
- - - - - - - - -
Vulnerabilities in Microsoft PowerPoint Allows Code Execution (MS06-058)
------------------------------------------------------------------------
SUMMARY
Several vulnerabilities discovered in different versions of Microsoft
PowerPoint that allow remote attackers to cause the product to execute
arbitrary code.
DETAILS
Affected Software:
* Microsoft Office 2000 Service Pack 3
<http://www.microsoft.com/downloads/details.aspx?FamilyId=14A61FDA-BFE2-47CA-8313-40B772359994>
Download the update (KB923093)
* Microsoft Office XP Service Pack 3
<http://www.microsoft.com/downloads/details.aspx?FamilyId=0FBD66FB-28BB-4587-9425-AD4A3F10651D>
Download the update (KB923092)
* Microsoft Office 2003 Service Pack 1 or Service Pack 2
<http://www.microsoft.com/downloads/details.aspx?FamilyId=D0E30F77-B48F-4B8B-A6FA-105A354B1A4E>
Download the update (KB923091)
* Microsoft PowerPoint 2004 for Mac - <http://www.microsoft.com/mac/>
Download the update (KB924999)
* Microsoft PowerPoint v. X for Mac - <http://www.microsoft.com/mac/>
Download the update (KB924998)
Non-Affected Software:
* Microsoft PowerPoint 2003 Viewer
PowerPoint Malformed Object Pointer Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3435>
CVE-2006-3435:
A remote code execution vulnerability exists in PowerPoint. An attacker
could exploit this vulnerability when PowerPoint parsed a file that
included a malformed object pointer.
If a user were 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.
Mitigating Factors for PowerPoint Malformed Object Pointer Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3435>
CVE-2006-3435:
* 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.
* In a Web-based attack scenario, an attacker would have to host a Web
site that contains a PowerPoint file that is used to attempt to exploit
this vulnerability. In addition, compromised Web sites and Web sites that
accept or host user-provided content could contain specially crafted
content that could 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.
* The vulnerability cannot 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.
* Users who have installed and are using the
<http://www.microsoft.com/downloads/details.aspx?familyid=8B5762D2-077F-4031-9EE6-C9538E9F2A2F>
Office Document Open Confirmation Tool for Office 2000 will be prompted with
Open, Save, or Cancel before opening a document. The features of the Office
Document Open Confirmation Tool are incorporated in Office XP and Office 2003.
Workarounds for PowerPoint Malformed Object Pointer Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3435>
CVE-2006-3435:
* Do not open or save Microsoft PowerPoint files that you receive from
untrusted sources or that you receive unexpectedly from trusted sources.
This vulnerability could be exploited when a user opens a specially
crafted file.
FAQ for PowerPoint Malformed Object Pointer Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3435>
CVE-2006-3435:
What is the scope of the vulnerability?
A remote code execution vulnerability exists in PowerPoint. An attacker
could exploit this vulnerability when PowerPoint parsed a file that
included a malformed object pointer.
If a user were 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?
PowerPoint does not perform sufficient data validation when processing the
contents of a .ppt file. When PowerPoint opens a specially crafted
PowerPoint file and parses a malformed object, 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 cause
arbitrary code to run with the privileges of the user who opened the file.
How could an attacker exploit the vulnerability?
In an e-mail attack scenario, an attacker could exploit the vulnerability
by sending a specially-crafted file to the user and persuading the user to
open the file.
In a Web-based attack scenario, an attacker would have to host a Web site
that contains a PowerPoint file that is used to attempt to exploit this
vulnerability. In addition, compromised Web sites and Web sites that
accept or host user-provided content could contain specially crafted
content that could 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.
What systems are primarily at risk from the vulnerability?
Workstations and terminal servers are primarily at risk. Servers could be
at more risk if administrators allow users 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
parses the file and validates the object pointer before passing it 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. This security bulletin addresses
the privately disclosed vulnerability as well as additional issues
discovered through internal investigations.
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.
PowerPoint Malformed Data Record Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3876>
CVE-2006-3876:
A remote code execution vulnerability exists in PowerPoint. An attacker
could exploit this vulnerability when PowerPoint parsed a file that
included a malformed Data record.
If a user were 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.
Mitigating Factors for PowerPoint Malformed Data Record Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3876>
CVE-2006-3876:
* 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.
* In a Web-based attack scenario, an attacker would have to host a Web
site that contains a PowerPoint file that is used to attempt to exploit
this vulnerability. In addition, compromised Web sites and Web sites that
accept or host user-provided content could contain specially crafted
content that could 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.
* The vulnerability cannot 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.
* Users who have installed and are using the
<http://www.microsoft.com/downloads/details.aspx?familyid=8B5762D2-077F-4031-9EE6-C9538E9F2A2F>
Office Document Open Confirmation Tool for Office 2000 will be prompted with
Open, Save, or Cancel before opening a document. The features of the Office
Document Open Confirmation Tool are incorporated in Office XP and Office 2003.
Workarounds for PowerPoint Malformed Data Record Vulnerability -
<">CVE-2006-3876:
* Do not open or save Microsoft PowerPoint files that you receive from
untrusted sources or that you receive unexpectedly from trusted sources.
This vulnerability could be exploited when a user opens a specially
crafted file.
FAQ for PowerPoint Malformed Data Record Vulnerability - <CVE-2006-3876>
CVE-2006-3876:
What is the scope of the vulnerability?
A remote code execution vulnerability exists in PowerPoint. An attacker
could exploit this vulnerability when PowerPoint parsed a file that
included a malformed Data record.
If a user were 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?
PowerPoint does not perform sufficient data validation when processing the
contents of a .ppt file. When PowerPoint opens a specially crafted
PowerPoint file and parses a malformed data 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 cause
arbitrary code to run with the privileges of the user who opened the file.
How could an attacker exploit the vulnerability?
In a Web-based attack scenario, an attacker could host a Web site that
contains a Web page that is used to exploit this vulnerability. In
addition, compromised Web sites and Web sites that accept or host
user-provided content or advertisements could contain specially crafted
content that could exploit this vulnerability. In all cases, however, an
attacker would have no way to force users to visit these Web sites.
Instead, an attacker would have to persuade users to visit the Web site,
typically by getting them to click a link in an e-mail message or instant
messenger message that takes users to the attacker's Web 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.
What systems are primarily at risk from the vulnerability?
Workstations and terminal servers are primarily at risk. Servers could be
at more risk if administrators allow users 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
parses the file and validates the length of a date record before passing
it 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. This security bulletin addresses
the privately disclosed vulnerability as well as additional issues
discovered through internal investigations.
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.
PowerPoint Malformed Record Memory Corruption Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3877>
CVE-2006-3877:
A remote code execution vulnerability exists in PowerPoint and could be
exploited when PowerPoint opened a specially crafted file. Such a file
might be included in an e-mail attachment or hosted on a malicious web
site. An attacker could exploit the vulnerability by constructing a
specially crafted PowerPoint file that could allow remote code execution.
If a user were 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.
Mitigating Factors for PowerPoint Malformed Record Memory Corruption
Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3877>
CVE-2006-3877:
* 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.
* In a Web-based attack scenario, an attacker would have to host a Web
site that contains a PowerPoint file that is used to attempt to exploit
this vulnerability. In addition, compromised Web sites and Web sites that
accept or host user-provided content could contain specially crafted
content that could 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.
* The vulnerability cannot 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.
* Users who have installed and are using the
<http://www.microsoft.com/downloads/details.aspx?familyid=8B5762D2-077F-4031-9EE6-C9538E9F2A2F>
Office Document Open Confirmation Tool for Office 2000 will be prompted with
Open, Save, or Cancel before opening a document. The features of the Office
Document Open Confirmation Tool are incorporated in Office XP and Office 2003.
Workarounds for PowerPoint Malformed Record Memory Corruption
Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3877>
CVE-2006-3877:
* Do not open or save Microsoft PowerPoint files that you receive from
untrusted sources or that you receive unexpectedly from trusted sources.
This vulnerability could be exploited when a user opens a specially
crafted file.
FAQ for PowerPoint Malformed Record Memory Corruption Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3877>
CVE-2006-3877:
What is the scope of the vulnerability?
A remote code execution vulnerability exists in PowerPoint and could be
exploited when PowerPoint opens a file containing malformed record. Such a
file might be included in an e-mail attachment or hosted on a malicious
web site. An attacker could exploit the vulnerability by constructing a
specially crafted PowerPoint file that could allow remote code execution.
If a user were 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?
The vulnerability is caused when PowerPoint opens a specially crafted
PowerPoint file which will results in the access of memory outside
intended regions when parsing placeholder data.
What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could cause
arbitrary code to run with the privileges of the user who opened the file.
How could an attacker exploit the vulnerability?
In a Web-based attack scenario, an attacker could host a Web site that
contains a Web page that is used to exploit this vulnerability. In
addition, compromised Web sites and Web sites that accept or host
user-provided content or advertisements could contain specially crafted
content that could exploit this vulnerability. In all cases, however, an
attacker would have no way to force users to visit these Web sites.
Instead, an attacker would have to persuade users to visit the Web site,
typically by getting them to click a link in an e-mail message or instant
messenger message that takes users to the attacker's Web site.
In an e-mail attack scenario, an attacker could exploit the vulnerability
by sending a specially-crafted PowerPoint file to the user and by
persuading the user to open the file.
What systems are primarily at risk from the vulnerability?
Workstations and terminal servers are primarily at risk. Servers could be
at more risk if administrators allow users 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
parses the file and validates the record before passing it 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. This security bulletin addresses
the privately disclosed vulnerability as well as additional issues
discovered through internal investigations.
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.
PowerPoint Malformed Record Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4694>
CVE-2006-4694:
A remote code execution vulnerability exists in PowerPoint and could be
exploited when PowerPoint opened a specially crafted file. Such a file
might be included in an e-mail attachment or hosted on a malicious web
site. An attacker could exploit the vulnerability by constructing a
specially crafted PowerPoint file that could allow remote code execution.
If a user were 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.
Mitigating Factors for PowerPoint Malformed Record Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4694>
CVE-2006-4694:
* 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.
* In a Web-based attack scenario, an attacker would have to host a Web
site that contains a PowerPoint file that is used to attempt to exploit
this vulnerability. In addition, compromised Web sites and Web sites that
accept or host user-provided content could contain specially crafted
content that could 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.
* The vulnerability cannot 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.
* Users who have installed and are using the
<http://www.microsoft.com/downloads/details.aspx?familyid=8B5762D2-077F-4031-9EE6-C9538E9F2A2F>
Office Document Open Confirmation Tool for Office 2000 will be prompted with
Open, Save, or Cancel before opening a document. The features of the Office
Document Open Confirmation Tool are incorporated in Office XP and Office 2003.
Workarounds for PowerPoint Malformed Record Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4694>
CVE-2006-4694:
* Do not open or save Microsoft PowerPoint files that you receive from
untrusted sources or that you receive unexpectedly from trusted sources.
This vulnerability could be exploited when a user opens a specially
crafted file.
FAQ for PowerPoint Malformed Record Vulnerability -
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4694>
CVE-2006-4694:
What is the scope of the vulnerability?
A remote code execution vulnerability exists in PowerPoint and could be
exploited when PowerPoint opens a file containing malformed record. Such a
file might be included in an e-mail attachment or hosted on a malicious
web site. An attacker could exploit the vulnerability by constructing a
specially crafted PowerPoint file that could allow remote code execution.
If a user were 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?
The vulnerability is caused by an error in the way PowerPoint opens a
specially crafted PowerPoint file. This error can result in access to
memory outside intended regions when PowerPoint is parsing placeholder
data.
What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could cause
arbitrary code to run with the privileges of the user who opened the file.
How could an attacker exploit the vulnerability?
In a Web-based attack scenario, an attacker could host a Web site that
contains a Web page that is used to exploit this vulnerability. In
addition, compromised Web sites and Web sites that accept or host
user-provided content or advertisements could contain specially crafted
content that could exploit this vulnerability. In all cases, however, an
attacker would have no way to force users to visit these Web sites.
Instead, an attacker would have to persuade users to visit the Web site,
typically by getting them to click a link in an e-mail message or instant
messenger message that takes users to the attacker's Web 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.
What systems are primarily at risk from the vulnerability?
Workstations and terminal servers are primarily at risk. Servers could be
at more risk if administrators allow users 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
parses the file and validates the record before passing it to the
allocated buffer.
When this security bulletin was issued, had this vulnerability been
publicly disclosed?
Yes. While the initial report was provided through responsible disclosure,
the vulnerability was later disclosed publicly. This security bulletin
addresses the publicly disclosed vulnerability as well as additional
issues discovered through internal investigations.
When this security bulletin was issued, had Microsoft received any reports
that this vulnerability was being exploited?
Yes. When the security bulletin was released, Microsoft had received
information that this vulnerability was being exploited.
ADDITIONAL INFORMATION
The information has been provided by Microsoft Security Bulletin.
The original article can be found at:
<http://www.microsoft.com/technet/security/bulletin/ms06-058.mspx>
http://www.microsoft.com/technet/security/bulletin/ms06-058.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@securiteam.com
In order to subscribe to the mailing list, simply forward this email to:
list-subscribe@securiteam.com
====================
====================
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.
