Microsoft · Security update · September 11, 2018

KB4457143: September 2018 security update

KB4457143, released September 11, 2018, fixes 20 CVEs across 4 products. One of them is being exploited (CVE-2018-8440); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEVKnown ransomware use2 publicly disclosed

CVEs closed

4 rated Critical

Exploited

CVE-2018-8440

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.4890

98th percentile

Priority of the 20 CVEs

Patch now 1
                                Urgent 7
                                High 3
                                Routine 9

Applies to

Product
Windows 8.1 for 32-bit systems
Windows 8.1 for x64-based systems
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2018-8440	Microsoft Windows	Elevation of Privilege	7.8	0.1853	KEVRansomwareDisclosedExploited
Urgent	CVE-2018-8420	Microsoft XML Core Services	Remote Code Execution	7.5	0.4890	More likely
Urgent	CVE-2018-8332	Microsoft Graphics Component	Remote Code Execution	8.8	0.1907	Exploitation Less Likely
Urgent	CVE-2018-8475	Microsoft Graphics Component	Remote Code Execution	8.8	0.1586	DisclosedMore likely
Urgent	CVE-2018-8468	Windows Shell	Elevation of Privilege	4.3	0.1177	More likely
Urgent	CVE-2018-8439	Windows Hyper-V	Remote Code Execution	7.6	0.0431	Exploitation Less Likely
Urgent	CVE-2018-8410	Microsoft Windows	Elevation of Privilege	7.0	0.0398	More likely
Urgent	CVE-2018-8442	Windows Kernel	Information Disclosure	4.7	0.0278	More likely
High	CVE-2018-8392	Microsoft JET Database Engine	Remote Code Execution	7.8	0.2276	Exploitation Less Likely
High	CVE-2018-8393	Microsoft JET Database Engine	Remote Code Execution	7.8	0.2248	Exploitation Less Likely
High	CVE-2018-8444	Windows SMB Server	Information Disclosure	7.0	0.0586	N/A
Routine	CVE-2018-8424	Microsoft Graphics Component	Information Disclosure	4.7	0.1299	Exploitation Less Likely
Routine	CVE-2018-8335	Windows SMB Server	Denial of Service	4.8	0.0900	Exploitation Less Likely
Routine	CVE-2018-8438	Microsoft Windows	Denial of Service	5.8	0.0717	Exploitation Less Likely
Routine	CVE-2018-8434	Windows Hyper-V	Information Disclosure	5.4	0.0349	Exploitation Less Likely
Routine	CVE-2018-8443	Windows Kernel	Information Disclosure	4.7	0.0278	Exploitation Less Likely
Routine	CVE-2018-8446	Windows Kernel	Information Disclosure	4.7	0.0278	Exploitation Less Likely
Routine	CVE-2018-8271	Microsoft Windows	Information Disclosure	2.5	0.0278	Exploitation Less Likely
Routine	CVE-2018-8433	Microsoft Graphics Component	Information Disclosure	4.7	0.0263	Exploitation Less Likely
Routine	CVE-2018-8419	Windows Media	Information Disclosure	4.7	0.0168	Exploitation Less Likely

Released the same day

KB4022207
Microsoft SharePoint Server 2010 Service Pack 2
KB4032246
Microsoft Word 2013 RT Service Pack 1, Microsoft Word 2013 Service Pack 1 (32-bit editions), Microsoft Word 2013 Service Pack 1 (64-bit editions)
KB4092447
Microsoft Word 2016 (32-bit edition), Microsoft Word 2016 (64-bit edition)
KB4092459
Microsoft SharePoint Enterprise Server 2016
KB4092460
Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
KB4092466
Microsoft Office Compatibility Pack Service Pack 3
KB4092467
Microsoft Excel Viewer 2007 Service Pack 3
KB4092470
Microsoft SharePoint Enterprise Server 2013 Service Pack 1
KB4092479
Microsoft Excel 2013 RT Service Pack 1, Microsoft Excel 2013 Service Pack 1 (32-bit editions), Microsoft Excel 2013 Service Pack 1 (64-bit editions)
KB4227175
Microsoft Excel 2010 Service Pack 2 (32-bit editions), Microsoft Excel 2010 Service Pack 2 (64-bit editions)
KB4457128
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems, Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems, Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems and 10 more
KB4457129
Internet Explorer 11 on Windows 8.1 for 32-bit systems, Internet Explorer 11 on Windows 8.1 for x64-based systems, Internet Explorer 11 on Windows RT 8.1 and 6 more

Vendor advisory

https://support.microsoft.com/help/4457143

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