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Vulnerability of Excel: several vulnerabilities

Synthesis of the vulnerability 

Three vulnerabilities of Excel can be used by an attacker to execute code on computers of victims accepting to open a malicious file.
Vulnerable systems: Office, Excel.
Severity of this threat: 3/4.
Number of vulnerabilities in this bulletin: 3.
Creation date: 10/12/2008.
Références of this weakness: BID-32618, BID-32621, BID-32622, CERTA-2008-AVI-588, CVE-2008-4264, CVE-2008-4265, CVE-2008-4266, MS08-074, VIGILANCE-VUL-8306.

Description of the vulnerability 

Three vulnerabilities of Excel can be used by an attacker to execute code on computers of victims accepting to open a malicious file.

When an Excel file containing malicious fields is opened, the memory is corrupted. [severity:3/4; BID-32618, CVE-2008-4265]

When a malicious Excel file is opened, the memory is corrupted. [severity:3/4; BID-32621, CERTA-2008-AVI-588, CVE-2008-4264]

A malicious Excel file corrupts the memory of a global array via the "NAME" record. [severity:3/4; BID-32622, CVE-2008-4266]
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This computer vulnerability announce impacts software or systems such as Office, Excel.

Our Vigil@nce team determined that the severity of this cybersecurity bulletin is important.

The trust level is of type confirmed by the editor, with an origin of document.

This bulletin is about 3 vulnerabilities.

An attacker with a expert ability can exploit this threat alert.

Solutions for this threat 

Excel: patch.
The Microsoft announce indicates patches and workarounds.
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