Vulnerability identifier: #VU1264

Vulnerability risk: High

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-2008-0117

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Microsoft Office for Mac
Client/Desktop applications / Office applications
Microsoft Excel
Client/Desktop applications / Office applications

Vendor: Microsoft

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

The weakness exists due to a boundary error when conditional formatting values handling in Excel files. A remote attacker can create a specially crafted Excel 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.

Mitigation
Install update from vendor's website:

Excel 2000 Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?FamilyId=f7f90c30-1bfd-406b-a77f-612443e30185
Excel 2002 Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?FamilyId=907f96d5-d1e9-4471-b41c-3ac811e63038
Microsoft Office 2004 for Mac:
https://www.microsoft.com/downloads/details.aspx?FamilyId=95DCEB37-B35F-46DB-B280-DB0F3B298AA9
Microsoft Office 2008 for Mac:
https://www.microsoft.com/downloads/details.aspx?FamilyId=8FE8C32A-6D7A-482B-97C6-42562F089EE4

Vulnerable software versions

Microsoft Office for Mac: 2004 - 2008

Microsoft Excel:

---

External links
http://technet.microsoft.com/en-us/library/security/ms08-014.aspx

---

Q & A

Can this vulnerability be exploited remotely?

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

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.