Microsoft released patches for 61 vulnerabilities. In addition, we got two advisories. One for the usual update for Flash, and one for a Windows DoS vulnerability.

The DoS advisory covers "FragmentSmack", an issue first released mid-August. For Unix systems, the recommendation was to reduce the buffer space used for fragments. Microsoft is going a step further: It suggests to drop all out of order fragements. This step appears to be a bit "drastic" in that it can lead to valid data being dropped and something to consider if you tune your IDS accordingly.

This update also patches the "ALPC" privilege escalation flaw, which has already been exploited by malware.

3 additional already disclosed vulnerabilities are patched (see table below for details)

See the Patch Tuesday Dashboard for more details.

Description CVE Disclosed Exploited Exploitability (old versions) current version Severity CVSS Base (AVG) CVSS Temporal (AVG) .NET Framework Remote Code Execution Vulnerability CVE-2018-8421 No No Less Likely Less Likely Critical Azure IoT SDK Spoofing Vulnerability CVE-2018-8479 No No - - Important Chakra Scripting Engine Memory Corruption Vulnerability CVE-2018-8367 No No - - Critical 4.2 3.8 CVE-2018-8465 No No - - Critical 4.2 3.8 CVE-2018-8466 No No - - Critical 4.2 3.8 CVE-2018-8467 No No - - Critical 4.2 3.8 Device Guard Security Feature Bypass Vulnerability CVE-2018-8449 No No More Likely More Likely Important 5.3 4.8 DirectX Graphics Kernel Elevation of Privilege Vulnerability CVE-2018-8462 No No More Likely More Likely Important 7.0 6.3 Internet Explorer Memory Corruption Vulnerability CVE-2018-8461 No No More Likely More Likely Critical 7.5 6.7 CVE-2018-8447 No No More Likely More Likely Critical 6.4 5.8 Internet Explorer Security Feature Bypass Vulnerability CVE-2018-8470 No No - - Important 2.4 2.2 Lync for Mac 2011 Security Feature Bypass Vulnerability CVE-2018-8474 No No - - Moderate MS XML Remote Code Execution Vulnerability CVE-2018-8420 No No More Likely More Likely Critical 6.4 5.8 Microsoft Edge Elevation of Privilege Vulnerability CVE-2018-8463 No No - - Important 4.3 3.9 CVE-2018-8469 No No - - Important 4.3 3.9 Microsoft Edge Information Disclosure Vulnerability CVE-2018-8366 No No - - Important 4.3 3.9 Microsoft Edge PDF Remote Code Execution Vulnerability CVE-2018-8464 No No - - Critical 4.2 3.8 Microsoft Edge Spoofing Vulnerability CVE-2018-8425 No No - - Important 5.3 5.3 Microsoft Excel Information Disclosure Vulnerability CVE-2018-8429 No No Less Likely Less Likely Important Microsoft Excel Remote Code Execution Vulnerability CVE-2018-8331 No No - - Important Microsoft Graphics Component Information Disclosure Vulnerability CVE-2018-8433 No No Less Likely Less Likely Important 4.7 4.2 Microsoft JET Database Engine Remote Code Execution Vulnerability CVE-2018-8392 No No Less Likely Less Likely Important 7.8 7.0 CVE-2018-8393 No No Less Likely Less Likely Important 7.8 7.0 Microsoft Office SharePoint XSS Vulnerability CVE-2018-8426 No No Less Likely Less Likely Important Microsoft Scripting Engine Information Disclosure Vulnerability CVE-2018-8315 No No - - Important 4.2 3.8 Microsoft SharePoint Elevation of Privilege Vulnerability CVE-2018-8428 No No Less Likely Less Likely Important CVE-2018-8431 No No Less Likely Less Likely Important OData Denial of Service Vulnerability CVE-2018-8269 No No Less Likely Less Likely Important Scripting Engine Information Disclosure Vulnerability CVE-2018-8452 No No - - Important 4.3 3.9 Scripting Engine Memory Corruption Vulnerability CVE-2018-8354 No No - - Important 4.2 3.8 CVE-2018-8391 No No - - Critical 4.2 3.8 CVE-2018-8456 No No - - Critical 4.2 3.8 CVE-2018-8457 Yes No More Likely More Likely Critical 6.4 5.8 CVE-2018-8459 No No - - Critical 4.2 3.8 September 2018 Adobe Flash Security Update ADV180023 No No - - Critical System.IO.Pipelines Denial of Service CVE-2018-8409 Yes No Less Likely Less Likely Important Win32k Graphics Remote Code Execution Vulnerability CVE-2018-8332 No No Less Likely Less Likely Critical 8.8 8.8 Windows ALPC Elevation of Privilege Vulnerability CVE-2018-8440 Yes Yes More Likely More Likely Important 7.0 6.3 Windows Denial of Service Vulnerability ADV180022 No No Less Likely Less Likely Important Windows Elevation of Privilege Vulnerability CVE-2018-8468 No No More Likely More Likely Important 4.3 3.9 Windows GDI Information Disclosure Vulnerability CVE-2018-8424 No No Less Likely Less Likely Important 4.7 4.2 Windows Hyper-V Denial of Service Vulnerability CVE-2018-8436 No No - - Important 5.4 4.9 CVE-2018-8437 No No - - Important 5.4 4.9 CVE-2018-8438 No No Less Likely Less Likely Important 5.8 5.2 Windows Hyper-V Information Disclosure Vulnerability CVE-2018-8434 No No Less Likely Less Likely Important 5.4 4.9 Windows Hyper-V Remote Code Execution Vulnerability CVE-2018-0965 No No Less Likely Less Likely Critical 7.6 6.8 CVE-2018-8439 No No Less Likely Less Likely Critical 7.6 6.8 Windows Hyper-V Security Feature Bypass Vulnerability CVE-2018-8435 No No Less Likely Less Likely Important 4.2 3.8 Windows Information Disclosure Vulnerability CVE-2018-8271 No No Less Likely Less Likely Important 2.5 2.5 Windows Kernel Elevation of Privilege Vulnerability CVE-2018-8455 No No Less Likely Less Likely Important 7.0 6.3 Windows Kernel Information Disclosure Vulnerability CVE-2018-8336 No No - - Important 2.5 2.5 CVE-2018-8419 No No Less Likely Less Likely Important 4.7 4.2 CVE-2018-8442 No No More Likely More Likely Important 4.7 4.2 CVE-2018-8443 No No Less Likely Less Likely Important 4.7 4.2 CVE-2018-8445 No No - - Important 4.7 4.2 CVE-2018-8446 No No Less Likely Less Likely Important 4.7 4.2 Windows Registry Elevation of Privilege Vulnerability CVE-2018-8410 No No More Likely More Likely Important 7.0 6.3 Windows Remote Code Execution Vulnerability CVE-2018-8475 Yes No More Likely More Likely Critical 8.8 7.9 Windows SMB Denial of Service Vulnerability CVE-2018-8335 No No Less Likely Less Likely Important 4.8 4.8 Windows SMB Information Disclosure Vulnerability CVE-2018-8444 No No - - Important 7.0 6.3 Windows Subsystem for Linux Elevation of Privilege Vulnerability CVE-2018-8441 No No - - Important 7.0 6.3 Windows Subsystem for Linux Security Feature Bypass Vulnerability CVE-2018-8337 No No - - Important 5.3 4.8 Word PDF Remote Code Execution Vulnerability CVE-2018-8430 No No More Likely More Likely Important

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Johannes B. Ullrich, Ph.D. , Dean of Research, SANS Technology Institute

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