Excel 97 Virus Warning Vulnerabilities

Vulnerabilities exist in the Microsoft® Excel 97 virus warning mechanism that could be misused to bypass the warning mechanism.

Issue

Microsoft Excel 97 provides a feature that warns the user before launching an external file that could potentially contain a virus or other malicious software. This feature allows the user to weigh the risk of opening the file, based on its origin, the network it is located on and the security practices in operation there, the sensitivity of the data on the user's computer, and other factors.

However, certain scenarios have been identified that could be misused to bypass the warning mechanism. In general, they require the use of infrequently-combined features and commands, and are unlikely to be encountered in normal use. This patch addresses these issues so that they cannot be taken advantage of by a malicious user.

Affected Products

• Microsoft Excel 97

Download

Patch: http://officeupdate.microsoft.com/downloaddetails/xl8p6pkg.htm

Further Details

Source: Microsoft Corporation

Reference: Microsoft Corporation

Updated: May 7, 1999

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