Content

(MS07-014) Microsoft Word Malformed Data Structures Vulnerability (929434)

Type
Buffer Overflow
Impact of exploitation
Remote Code Execution
User Interaction
user interaction is needed
Attack Vector
Website or e-mail with malicious content
Rating
High
CVE reference
CVE-2006-6456,
Vendor Status
Responded and patched
Vulnerable systems
Windows XP  SP0 - SP2,
Windows 2003  SP0 - SP1,
Windows 2000  SP4,
Office 2000  SP3,
Office XP  SP3,
Office 2003  SP2,
Microsoft Works Suite  2004,
Microsoft Works Suite  2005,
Microsoft Works Suite  2006,
Office for Mac  2004,
Summary
A vulnerability exists in Microsoft Word that could allow for arbitrary code execution. This could be exploited successfully if a victim were to open a specially crafted Word document obtained via an email attachment or downloaded from a malicious website.

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Description

Microsoft Word is an industry standard word processing application. A vulnerability is present in Microsoft Word that may allow for arbitrary remote code execution. The flaw lies in processing of Microsoft Word documents containing certain malformed data structures. The resulting memory corruption could allow a remote attacker the ability to execute code at the rights level of the victim.

McAfee Product Mitigation & Recommendations

Recommendations

Download and install the patch available from Microsoft (929434): http://www.microsoft.com/technet/security/Bulletin/MS07-014.mspx

McAfee Product Mitigation

McAfee Foundstone

This future Foundstone vulnerability check can be used to assess if your systems are vulnerable and is expected to accurately identify if a system is vulnerable in many enterprise environments.

Signature:
Microsoft Word 0-Day Vulnerability II
Signature identifier:
4783
Release date:
12/12/2006
First released in:
McAfee Intrushield

McAfee Intrushield is proactively protecting customers against all known exploits of this buffer overflow vulnerability. McAfee Avert Labs will continue to update our coverage, as needed, as new exploit vectors are discovered and as new threats emerge.

Signature:
HTTP: Malicious Word Document Download
Signature identifier:
0x4022FF00
Release date:
12/14/2006
First released in:
sigset 3.1.27
McAfee Host IPS

McAfee Host IPS is proactively protecting customers against all known exploits of this buffer overflow vulnerability. McAfee Avert Labs will continue to update our coverage, as needed, as new exploit vectors are discovered and as new threats emerge.

Signature:
Illegal Execution in winword.exe
Signature identifier:
3754
Release date:
6/13/2006
First released in:
Security content update 468
McAfee Host IPS

Out of the box, HIPS protects against many buffer overflow exploits. McAfee Avert Labs will continue to update our coverage, as needed, as new exploit vectors are discovered and as new threats emerge.

Signature:
Generic buffer overflow protection
Signature identifier:
428
Release date:
8/24/2000
First released in:
2.0
McAfee VirusScan Enterprise 8.0i (VSE8.0i) / Managed Virus Scan (MVS) Buffer Overflow Protection

Out of the box, VSE8.0i and MVS protects against many buffer overflow exploits. McAfee Avert Labs will continue to update our coverage, as needed, as new exploit vectors are discovered and as new threats emerge.

Signature:
Buffer Overflow Protection
Release date:
8/30/2004
First released in:
build 131
McAfee Anti-Virus protection

The following A-V signature detects malware that is known to exploit this vulnerability.

Signature:
Exploit-MSWord.b
Release date:
12/10/2006
First released in:
DAT 4915

Additional Resources

Exploit-MSWord.b

http://vil.nai.com/vil/content/v_141056.htm

New Report of A Word Zero Day

http://blogs.technet.com/msrc/archive/2006/12/10/new-report-of-a-word-zero-day.aspx

Microsoft Security Bulletin: Vulnerabilities in Microsoft Word Could Allow Remote Code Execution (929434)

http://www.microsoft.com/technet/security/Bulletin/MS07-014.mspx

All Information

Timeline -

2/13/2007

Vendor has provided a patch.

12/10/2006

Vendor has provided information on the vulnerability.

12/9/2006

Vulnerability information has been publicly disclosed.

Description -

Microsoft Word is an industry standard word processing application. A vulnerability is present in Microsoft Word that may allow for arbitrary remote code execution. The flaw lies in processing of Microsoft Word documents containing certain malformed data structures. The resulting memory corruption could allow a remote attacker the ability to execute code at the rights level of the victim.

McAfee Product Mitigation & Recommendations

Recommendations -

Download and install the patch available from Microsoft (929434): http://www.microsoft.com/technet/security/Bulletin/MS07-014.mspx

McAfee Product Mitigation

McAfee Foundstone

This future Foundstone vulnerability check can be used to assess if your systems are vulnerable and is expected to accurately identify if a system is vulnerable in many enterprise environments.

Signature:
Microsoft Word 0-Day Vulnerability II
Signature identifier:
4783
Release date:
12/12/2006
First released in:
McAfee Intrushield

McAfee Intrushield is proactively protecting customers against all known exploits of this buffer overflow vulnerability. McAfee Avert Labs will continue to update our coverage, as needed, as new exploit vectors are discovered and as new threats emerge.

Signature:
HTTP: Malicious Word Document Download
Signature identifier:
0x4022FF00
Release date:
12/14/2006
First released in:
sigset 3.1.27
McAfee Host IPS

McAfee Host IPS is proactively protecting customers against all known exploits of this buffer overflow vulnerability. McAfee Avert Labs will continue to update our coverage, as needed, as new exploit vectors are discovered and as new threats emerge.

Signature:
Illegal Execution in winword.exe
Signature identifier:
3754
Release date:
6/13/2006
First released in:
Security content update 468
McAfee Host IPS

Out of the box, HIPS protects against many buffer overflow exploits. McAfee Avert Labs will continue to update our coverage, as needed, as new exploit vectors are discovered and as new threats emerge.

Signature:
Generic buffer overflow protection
Signature identifier:
428
Release date:
8/24/2000
First released in:
2.0
McAfee VirusScan Enterprise 8.0i (VSE8.0i) / Managed Virus Scan (MVS) Buffer Overflow Protection

Out of the box, VSE8.0i and MVS protects against many buffer overflow exploits. McAfee Avert Labs will continue to update our coverage, as needed, as new exploit vectors are discovered and as new threats emerge.

Signature:
Buffer Overflow Protection
Release date:
8/30/2004
First released in:
build 131
McAfee Anti-Virus protection

The following A-V signature detects malware that is known to exploit this vulnerability.

Signature:
Exploit-MSWord.b
Release date:
12/10/2006
First released in:
DAT 4915

Additional Resources

Additional Resources -

Exploit-MSWord.b

http://vil.nai.com/vil/content/v_141056.htm

New Report of A Word Zero Day

http://blogs.technet.com/msrc/archive/2006/12/10/new-report-of-a-word-zero-day.aspx

Microsoft Security Bulletin: Vulnerabilities in Microsoft Word Could Allow Remote Code Execution (929434)

http://www.microsoft.com/technet/security/Bulletin/MS07-014.mspx