Remote code execution in Microsoft Word

Published: 2008-07-08 | Updated: 2016-12-13
Severity Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2008-2244
CWE ID CWE-119
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Microsoft Word Subscribe
Microsoft Office
Vendor Microsoft

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Memory corruption

Severity: Critical

CVSSv3: 8.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]

CVE-ID: CVE-2008-2244

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description

The vulnerability alows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to buffer overflow when handling malformed Word files. A remote attacker can create a specially crafted Word file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation

Install update from vendor's website:

Microsoft Word 2002 Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?FamilyId=c7146dfc-e1be-4d13-877b-1d9bcacc4a64
https://technet.microsoft.com/library/security/ms08-026
Microsoft Word 2003 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?FamilyId=13a37b76-9fec-426f-8176-3c95f934efe0
https://technet.microsoft.com/library/security/ms08-026
Microsoft Word 2003 Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?FamilyId=13a37b76-9fec-426f-8176-3c95f934efe0
https://technet.microsoft.com/library/security/ms08-026

Vulnerable software versions

Microsoft Word: 2002, 2003

Microsoft Office: 2003, XP

CPE External links

https://technet.microsoft.com/en-us/library/security/ms08-042.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 an attachment in an e-mail message.

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.