Vulnerabilities in Microsoft ATL Could Allow Remote Code Execution (973908)

This host is missing a critical security update according to Microsoft Bulletin MS09-037.

The multiple flaws are due to: - Bug in the ATL header that could allow reading a variant from a stream and leaving the variant type read with an invalid variant. When deleting the variant, it is possible to free unintended areas in memory that could be controlled by an attacker. - Error in 'CComVariant::ReadFromStream()' function used in the ATL header. This function does not properly restrict untrusted data read from a stream. - An bug in the ATL headers that could allow an attacker to force VariantClear to be called on a VARIANT that has not been correctly initialized. - Bugs in the ATL headers that handle instantiation of an object from data streams.

Windows Media Player 9/10/11 Microsoft Outlook Express 6 Service Pack 1 Microsoft Outlook Express 5.5 Service Pack 2 Microsoft Windows 2K Service Pack 4 and prior Microsoft Windows XP Service Pack 3 and prior Microsoft Windows 2003 Service Pack 2 and prior Microsoft Windows Vista Service Pack 1/2 and prior Microsoft Windows Server 2008 Service Pack 1/2 and prior

The vendor has released updates. Please see the references for more information.