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vulnerability announce CVE-2011-1975

Microsoft DAC, Excel: code execution via DLL Preload

Synthesis of the vulnerability

An attacker can use a malicious DLL in order to execute code in Data Access Components, when an Excel file is opened.
Impacted products: Office, Excel, Windows 2008 R2, Windows 7.
Severity: 2/4.
Creation date: 10/08/2011.
Identifiers: 2560656, BID-49026, CVE-2011-1975, MS11-059, VIGILANCE-VUL-10897.

Description of the vulnerability

Microsoft Windows Data Access Components offer database features.

The Microsoft Excel program loads a DLL library via Windows DAC 6.0 when it starts.

However, the library is loaded insecurely. An attacker can thus use the VIGILANCE-VUL-9879 vulnerability to execute code.

An attacker can therefore use a malicious DLL in order to execute code in Data Access Components, when an Excel file is opened.
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