Patch Tuesday, December 2019

December's Patch Tuesday is upon us, and, as in years gone by, it's a rather light month. All told there are 35 CVEs patched, including six rated "Critical," 28 rated as "Important," and one rated "Moderate." On the shortlist of patches rated "Critical" is one for a Remote Code Execution (RCE) for Windows Hyper-V and four separate RCE vulnerabilities in Git for Visual Studio. All developers using Visual Studio should prioritize patching before any holiday vacation. Git for Visual Studio also has tampering vulnerability rated "Moderate." An attacker who successfully exploited this vulnerability could write arbitrary files and directories to virtual drive paths on a vulnerable system. Attackers could utilize this to push malware or other malicious files to a victim.

The vulnerabilities rated as “Important” are a mixed bag of Remote Code Execution, Information Disclosure, and Elevation of Privilege vulnerabilities. They affect popular client software packages like Skype and the MS Office Suite (including an RCE vulnerability in Powerpoint) as well as the Windows operating system in general.

Happy holidays and stay safe this season!

Critical

Git for Visual Studio Remote Code Execution Vulnerability
CVE-2019-1349, CVE-2019-1350, CVE-2019-1352, CVE-2019-1387
Remote Code Execution

Win32k Graphics Remote Code Execution Vulnerability
CVE-2019-1468
Remote Code Execution

Windows Hyper-V Remote Code Execution Vulnerability
CVE-2019-1471
Remote Code Execution

Important

Microsoft Access Information Disclosure Vulnerability
CVE-2019-1400, CVE-2019-1463
Information Disclosure

Microsoft Authentication Library for Android Information Disclosure Vulnerability
CVE-2019-1487
Information Disclosure

Microsoft Defender Security Feature Bypass Vulnerability
CVE-2019-1488
Security Feature Bypass

Microsoft Excel Information Disclosure Vulnerability
CVE-2019-1464
Information Disclosure

Microsoft PowerPoint Remote Code Execution Vulnerability
CVE-2019-1462
Remote Code Execution

Microsoft SQL Server Reporting Services XSS Vulnerability
CVE-2019-1332
Spoofing

Microsoft Word Denial of Service Vulnerability
CVE-2019-1461
Denial of Service

Skype for Business and Lync Spoofing Vulnerability
CVE-2019-1490
Spoofing

VBScript Remote Code Execution Vulnerability
CVE-2019-1485
Remote Code Execution

Visual Studio Live Share Spoofing Vulnerability
CVE-2019-1486
Spoofing

Win32k Elevation of Privilege Vulnerability
CVE-2019-1458
Elevation of Privilege

Win32k Information Disclosure Vulnerability
CVE-2019-1469
Information Disclosure

Windows COM Server Elevation of Privilege Vulnerability
CVE-2019-1478
Elevation of Privilege

Windows Elevation of Privilege Vulnerability
CVE-2019-1476, CVE-2019-1483
Elevation of Privilege

Windows GDI Information Disclosure Vulnerability
CVE-2019-1465, CVE-2019-1466, CVE-2019-1467
Information Disclosure

Windows Hyper-V Information Disclosure Vulnerability
CVE-2019-1470
Information Disclosure

Windows Kernel Information Disclosure Vulnerability
CVE-2019-1472, CVE-2019-1474
Information Disclosure

Windows Media Player Information Disclosure Vulnerability
CVE-2019-1480, CVE-2019-1481
Information Disclosure

Windows OLE Remote Code Execution Vulnerability
CVE-2019-1484
Remote Code Execution

Windows Printer Service Elevation of Privilege Vulnerability
CVE-2019-1477
Elevation of Privilege

Windows Remote Desktop Protocol (RDP) Denial of Service Vulnerability
CVE-2019-1453
Denial of Service

Remote Desktop Protocol Information Disclosure Vulnerability
CVE-2019-1489
Information Disclosure

Moderate

Git for Visual Studio Tampering Vulnerability
CVE-2019-1351
Tampering