#VU2945 Buffer overflow in Microsoft Excel and Microsoft Office for macOS - CVE-2011-0105

Vulnerability identifier: #VU2945

Vulnerability risk: High

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber

CVE-ID: CVE-2011-0105

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

Vulnerable software:
Microsoft Excel
Microsoft Office for macOS

Software vendor:
Microsoft

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

The weakness exists due to buffer overflow when data initialization. A remote attacker can create a specially crafted Excel file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Install update from vendor's website:

Microsoft Excel 2002 Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?familyid=db2c5cfe-588c-4646-b86a-3fb8248f7af4
http://go.microsoft.com/fwlink/?LinkId=200529
Microsoft Office 2004 for Mac:
https://www.microsoft.com/downloads/details.aspx?FamilyID=f756d836-6ab2-4adb-9dee-6cb523d7c1f5
Microsoft Office 2008 for Mac:
https://www.microsoft.com/downloads/details.aspx?FamilyID=84dfe3f4-a2a1-47b9-8da1-29ae67230918
http://go.microsoft.com/fwlink/?LinkId=203241
Open XML File Format Converter for Mac:
https://www.microsoft.com/downloads/details.aspx?FamilyID=0c323a12-6385-4666-ad39-a9516a8eda14
http://go.microsoft.com/fwlink/?LinkId=203241

• https://technet.microsoft.com/en-us/library/security/ms11-021.aspx