Microsoft issues Internet Explorer security update
Tuesday, November 3, 2009
Microsoft on Monday issued a security bulletin that updates a previous patch for Internet Explorer to resolve two issues. The IE bug only affects users who already applied the earlier patch.
Microsoft announced yesterday at the Microsoft Security Response Center that the security update MS09-054 released as part of the October Security Bulletin Release was causing errors in certain browsing scenarios.
The company said it is "not currently aware of any attempts to attack the vulnerabilities."
The MS09-054 bulletin is a fix rated critical for all Windows users. The bulletin addressed three flaws in all versions of IE and also an attack vector in the Firefox web browser for users with the Windows Presentation Foundation (WPF) plugin enabled.
Microsoft said users who have not applied the patch MS09-054 should first apply that fix before applying the fix from bulletin 976749.
The prior bulletin caused some confusion for Firefox maker Mozilla, which decided to block the Microsoft WPF add-on along with another .NET Framework Assistant add-on. Mozilla later unblocked the .NET Framework add-on within Firefox.
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