Patch Tuesday, August 2018
Just as Defcon/BSides/BlackHat wraps up in Las Vegas, August's Patch Tuesday is here to remind us of the importance of patching. Today's release brings with it 4 "Defense in Depth" Advisories and patches for 60 CVEs. The four advisories include the standard Adobe Flash rollup, Defense in Depth patches for the MS Office Suite and Windows Denial of Service vulnerabilities and patches for L1 Terminal Fault (L1TF). L1TF is a speculative execution side channel vulnerability similar to the hardware vulnerabilities Spectre and Meltdown. It affects Intel Core and Xeon processors and could allow an attacker to gain access to data that they would typically be isolated from. This would be specifically an issue in shared computing environments like in some cloud services.
Across the CVEs that are patched 20 are rated "Critical", 38 are rated "Important" and one each are rated "Moderate" and "Low". Vulnerabilities in the Scripting Engine embedded primarily in the Microsoft Web browsers, Internet Explorer and Edge, take up the majority of the "Critical" list. One of those Scripting Engine vulnerabilities (CVE-2018-8373) was discovered being exploited in the wild. In addition there are patches for Remote Code Execution vulnerabilities (RCE) in both Microsoft SQL and Microsoft Exchange servers.
On the "Important" list of patches are many Privilege Escalation and Local Arbitrary code execution vulnerabilities. This list includes CVE-2018-8414, which was patched out of band on August 2nd and is updated today. The vulnerability exists in how the ".SettingContent-ms" file type is handled by Microsoft Windows. Our Trustwave SpiderLabs research team has seen this vulnerability exploited in the wild through PDF files spread in malicious spam campaigns. You can read more about that in our previous post "Malicious SettingContent now delivered through PDF".
With critical RCE vulnerabilities in Microsoft Exchange and SQL servers as well as client side vulnerabilities already being exploited in the wild, Patch Tuesday comes with even more urgency this month.
Critical
August 2018 Adobe Flash Security Update
ADV180020
Remote Code Execution
Chakra Scripting Engine Memory Corruption Vulnerability
CVE-2018-8266, CVE-2018-8355, CVE-2018-8380, CVE-2018-8381, CVE-2018-8384
Remote Code Execution
GDI+ Remote Code Execution Vulnerability
CVE-2018-8397
Remote Code Execution
LNK Remote Code Execution Vulnerability
CVE-2018-8345
Remote Code Execution
Microsoft Browser Memory Corruption Vulnerability
CVE-2018-8403
Remote Code Execution
Microsoft Edge Memory Corruption Vulnerability
CVE-2018-8377, CVE-2018-8387
Remote Code Execution
Microsoft Exchange Memory Corruption Vulnerability
CVE-2018-8302
Remote Code Execution
Microsoft Graphics Remote Code Execution Vulnerability
CVE-2018-8344
Remote Code Execution
Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2018-8273
Remote Code Execution
Scripting Engine Memory Corruption Vulnerability
CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8373, CVE-2018-8385, CVE-2018-8390
Remote Code Execution
Windows PDF Remote Code Execution Vulnerability
CVE-2018-8350
Remote Code Execution
Important
.NET Framework Information Disclosure Vulnerability
CVE-2018-8360
Information Disclosure
AD FS Security Feature Bypass Vulnerability
CVE-2018-8340
Security Feature Bypass
Device Guard Code Integrity Policy Security Feature Bypass Vulnerability
CVE-2018-8200, CVE-2018-8204
Security Feature Bypass
Diagnostic Hub Standard Collector Elevation Of Privilege Vulnerability
CVE-2018-0952
Elevation of Privilege
DirectX Graphics Kernel Elevation of Privilege Vulnerability
CVE-2018-8400, CVE-2018-8401, CVE-2018-8405, CVE-2018-8406
Elevation of Privilege
Guidance to mitigate L1TF variant
ADV180018
Information Disclosure
Internet Explorer Remote Code Execution Vulnerability
CVE-2018-8316
Remote Code Execution
LNK Remote Code Execution Vulnerability
CVE-2018-8346
Remote Code Execution
Microsoft (MAU) Office Elevation of Privilege Vulnerability
CVE-2018-8412
Elevation of Privilege
Microsoft Browser Elevation of Privilege Vulnerability
CVE-2018-8357
Elevation of Privilege
Microsoft Browser Security Feature Bypass Vulnerability
CVE-2018-8358
Security Feature Bypass
Microsoft COM for Windows Remote Code Execution Vulnerability
CVE-2018-8349
Remote Code Execution
Microsoft Cortana Elevation of Privilege Vulnerability
CVE-2018-8253
Elevation of Privilege
Microsoft Edge Information Disclosure Vulnerability
CVE-2018-8370
Information Disclosure
Microsoft Edge Spoofing Vulnerability
CVE-2018-8383
Spoofing
Microsoft Excel Information Disclosure Vulnerability
CVE-2018-8382
Information Disclosure
Microsoft Excel Remote Code Execution Vulnerability
CVE-2018-8375, CVE-2018-8379
Remote Code Execution
Microsoft Office Information Disclosure Vulnerability
CVE-2018-8378
Information Disclosure
Microsoft PowerPoint Remote Code Execution Vulnerability
CVE-2018-8376
Remote Code Execution
Scripting Engine Memory Corruption Vulnerability
CVE-2018-8353, CVE-2018-8389
Remote Code Execution
Win32k Elevation of Privilege Vulnerability
CVE-2018-8399, CVE-2018-8404
Elevation of Privilege
Windows Denial of Service Vulnerability
ADV180022
Denial of Service
Windows GDI Information Disclosure Vulnerability
CVE-2018-8394, CVE-2018-8396, CVE-2018-8398
Information Disclosure
Windows Installer Elevation of Privilege Vulnerability
CVE-2018-8339
Elevation of Privilege
Windows Kernel Elevation of Privilege Vulnerability
CVE-2018-8347
Elevation of Privilege
Windows Kernel Information Disclosure Vulnerability
CVE-2018-8341, CVE-2018-8348
Information Disclosure
Windows NDIS Elevation of Privilege Vulnerability
CVE-2018-8342, CVE-2018-8343
Elevation of Privilege
Windows Shell Remote Code Execution Vulnerability
CVE-2018-8414
Remote Code Execution
Microsoft Edge Information Disclosure Vulnerability
CVE-2018-8351
Information Disclosure
Moderate
Microsoft Exchange Server Tampering Vulnerability
CVE-2018-8374
Tampering
Low
Microsoft Edge Spoofing Vulnerability
CVE-2018-8388
Spoofing
No Rating
Microsoft Office Defense in Depth Update
ADV180021
