Patch Tuesday: One critical patch for PowerPoint

Microsoft patched all Windows versions of Powerpoint today to address a client-side, zero-day flaw and 13 other privately reported security vulnerabilities, says Eric Schultze, Chief Technology Officer, Shavlik Technologies.   The zero-day vulnerability enabled attackers to take over client machines if a user opened a malformed powerpoint document or visited an evil website.  The attacker would be able to execute code on the user's machine with the same level of permissions afforded to the logged on user. 

Microsoft says that MS09-017 is a critical patch for PowerPoint:

This update received a 1 rating from Microsoft’s Exploitability Index. The updates for Office for Mac and Microsoft Works 8.5 and 9.0 users are still in development. Microsoft plans to issue updates for these software when testing is complete and we can ensure high quality. We are releasing this security update on an incremental basis because of active targeted exploitation toward Windows platform users.

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