#VU1371 Memory corruption in Microsoft Excel and Microsoft Office - CVE-2009-1134
Published: December 16, 2016 / Updated: March 16, 2017
Vulnerability identifier: #VU1371
Vulnerability risk: Critical
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:Red
CVE-ID: CVE-2009-1134
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Microsoft Excel
Microsoft Office
Microsoft Excel
Microsoft Office
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to buffer overflow when parsing the Excel spreadsheet file format. A remote attacker can create a specially crafted Excel file containing a malformed record pointer, 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: according to reports this vulnerability was being actively exploited before Microsoft issued security patch.
The weakness exists due to buffer overflow when parsing the Excel spreadsheet file format. A remote attacker can create a specially crafted Excel file containing a malformed record pointer, 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: according to reports this vulnerability was being actively exploited before Microsoft issued security patch.
Remediation
Install update from vendor's website:
Microsoft Office Excel 2007 Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=2bcd565a-6acb-407d-80da-0398526ddf99
http://go.microsoft.com/fwlink/?LinkID=143568
Microsoft Office Excel 2007 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=2bcd565a-6acb-407d-80da-0398526ddf99
Microsoft Office Excel Viewer:
https://www.microsoft.com/downloads/details.aspx?familyid=ac0530dc-7f63-4ad0-85c1-784ad28156cf
http://go.microsoft.com/fwlink/?LinkID=143568
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Service Pack 1 and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=a8be8457-b0b6-455e-907e-d13be883adf2
https://www.microsoft.com/downloads/details.aspx?familyid=a8be8457-b0b6-455e-907e-d13be883adf2
Microsoft Office Excel 2007 Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=2bcd565a-6acb-407d-80da-0398526ddf99
http://go.microsoft.com/fwlink/?LinkID=143568
Microsoft Office Excel 2007 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=2bcd565a-6acb-407d-80da-0398526ddf99
Microsoft Office Excel Viewer:
https://www.microsoft.com/downloads/details.aspx?familyid=ac0530dc-7f63-4ad0-85c1-784ad28156cf
http://go.microsoft.com/fwlink/?LinkID=143568
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Service Pack 1 and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=a8be8457-b0b6-455e-907e-d13be883adf2
https://www.microsoft.com/downloads/details.aspx?familyid=a8be8457-b0b6-455e-907e-d13be883adf2