KLA10784
Multiple vulnerabilities in Microsoft Windows

Multiple serious vulnerabilities have been found in Microsoft Windows. Malicious users can exploit these vulnerabilities to execute arbitrary code, obtain sensitive information, gain privileges, bypass security restrictions or cause denial of service.

Below is a complete list of vulnerabilities

1. An improper user input validation at OLE can be exploited remotely via a specially designed content to execute arbitrary code;
2. An improper user input validation at Hyper-V can be exploited by authenticated user via a specially designed application to execute arbitrary code or obtain sensitive information;
3. An improper requests managing at Windows Secondary Logon Service can be exploited by authenticated attacker via a specially designed application to gain privileges;
4. Lack of authentication levels restrictions at Security Account Manager and Local Security Authority (Domain Policy) can be exploited remotely via man-in-the-middle attack obtain SAM database;
5. An improper process tokens managing can be exploited by logged in attacker via a specially designed application to bypass CSRSS security restrictions;
6. An improper HTTP 2.0 requests parsing can be exploited remotely via a specially designed HTTP packet to cause denial of service.

NB: This vulnerability have no public CVSS rating so rating can be changed by the time.

Technical details

Vulnerability (2) related to user input at guest system. Users who does not enable Hyper-V are not affected to this vulnerability.

Vulnerability (4) caused by SAM and LSAD remote protocols accepting auth levels that do not protect them adequately by improper establishing RPC call. To exploit this vulnerability attacker can launch MiTM attack, force downgrade of auth level of SAM and LSAD and impersonate authenticated user.

Vulnerability (6) related to HTTP.sys.

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 8.1
Microsoft Windows Server 2012
Microsoft Windows Server 2012 R2
Microsoft Windows RT 8.1
Microsoft Windows 10

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-2016-0143
CVE-2016-0145
CVE-2016-0165
CVE-2016-0167
CVE-2016-0088
CVE-2016-0089
CVE-2016-0090
CVE-2016-0128
CVE-2016-0135
CVE-2016-0150
CVE-2016-0151
CVE-2016-0153

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