A vulnerability in the way that Microsoft Excel handles malformed image records could allow an attacker to execute arbitrary code on a vulnerable system.
Microsoft Excel fails to properly validate the size of IMDATA records. When a file containing a malformed IMDATA record is opened in Excel, system memory can be corrupted in a way that may allow an attacker to execute arbitrary code.
More information is available in Microsoft Security Bulletin MS07-002.
By convincing a user to open a specially crafted Excel document, an attacker could execute arbitrary code with the privileges of the user running Excel. If the user is logged in with administrative privileges, the attacker could take complete control of a vulnerable system.
Apply an update from Microsoft
Do not open untrusted Excel documents
This issue was reported by Jeff Gennari of CERT/CC.
This document was written by Jeff Gennari.
|Date First Published:||2007-01-09|
|Date Last Updated:||2007-01-23 17:05 UTC|