Friday, January 22, 2010

Technical Cyber Security Alert TA10-021A - Internet Explorer out of band patch released

Microsoft has issued a security patch for a vulnerability in Internet Explorer which was responsible for China’s targeted and sophisticated attacks against Google.

This security update is rated Critical for all supported releases of Internet Explorer: Internet Explorer 5.01, Internet Explorer 6, Internet Explorer 6 Service Pack 1, Internet Explorer 7, and Internet Explorer 8 (except Internet Explorer 6 for supported editions of Windows Server 2003). For Internet Explorer 6 for supported editions of Windows Server 2003 as listed, this update is rated Moderate. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses these vulnerabilities by modifying the way that Internet Explorer handles objects in memory, validates input parameters, and filters HTML attributes. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection under the next section, Vulnerability Information.

This week Microsoft began urging businesses and consumers to upgrade to Internet Explorer 8, explaining that the security benefits are far greater than that of Internet Explorer 6. Both the French and German governments warned their populations to cease using Internet Explorer due to the un-patched flaw. Currently the flaw exists in Internet Explorer versions 6, 7 and 8 but exploit code is only available for Internet Explorer 6.

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