Multiple serious vulnerabilities have been found in Microsoft Windows. Malicious users can exploit these vulnerabilities to cause denial of service or gain privileges.

Below is a complete list of vulnerabilities

1. Improper requests parsing at Windows Domain Name System (DNS) can be exploited remotely via a specially designed DNS requests to execute arbitrary code;
2. Improper fonts parsing at Uniscribe can be exploited remotely via a specially designed content to execute arbitrary code;
3. Improper input validation can be exploited locally via a specially designed application to execute arbitrary code;
4. Race condition at Windows Pragmatic General Multicast (PGM) protocol can be exploited by logged in attacker via a specially designed application to gain privileges;
5. Improper memory handling at Windows kernel can be exploited by logged in user to gain privileges.
6. Unspecified vulnerabilities in Windows Media Center

Technical details

Vulnerability (1) is relevant for Windows servers configured as DNS servers. Exploitation of this vulnerability can lead to arbitrary code execution in the context of Local System Account.

Vulnerability (3) caused by improper input validation before libraries loading.

Vulnerability (4) related to situation when attacker-induced race condition results in references to memory contents that have already been freed. This vulnerability id relevant only for systems with installed Microsoft Message Queuing and specifically enabled PGM which isn’t default configuration.

Microsoft Windows Vista Service Pack 2
Microsoft Windows Server 2008 Service Pack 2
Microsoft Windows 7 Service Pack 1
Microsoft Windows Server 2008 R2 Service Pack 1
Microsoft Windows 8
Microsoft Windows 8.1
Microsoft Windows Server 2012
Microsoft Windows Server 2012 R2
Microsoft Windows 10
Microsoft Windows 10 version 1511
Windows Media Center

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

CVE-2015-6127
CVE-2015-6131
CVE-2015-6130
CVE-2015-6133
CVE-2015-6132
CVE-2015-6126
CVE-2015-6125
CVE-2015-6175
CVE-2015-6174
CVE-2015-6128
CVE-2015-6171
CVE-2015-6173

3108347
3109094
3109103
3116130
3108381
3108371
3116162
3100465
3116900
3116869
3119075
3108670
3108669