Remote code execution in Microsoft Word

1) Memory corruption

EUVDB-ID: #VU1241

Risk: Critical

CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2007-3899

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to boundary error when handling malformed strings in Word document. A remote attacker can create a specially crafted MS Word document, trick the victim into opening it and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in compromise of vulnerable system.

Note: this vulnerability is being actively exploited.

Mitigation

Install the following patch:

Microsoft Office 2000 Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?FamilyId=8B3072FB-5933-47F7-A498-13A93E268E57
Microsoft Office XP Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?FamilyId=D6B787BB-03FF-4F67-8B69-6011FB18BA7
Microsoft Office 2004 for Mac:
https://www.microsoft.com/mac/downloads.aspx#Office2004

Vulnerable software versions

Microsoft Office: 2000 - XP

Microsoft Office for Mac: 2004

Microsoft Word: 2000 - 2002

External links

http://technet.microsoft.com/en-us/library/security/ms07-060.aspx

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.