Multiple vulnerabilities in Microsoft Windows

Published: 2017-10-10 23:55:57
Severity Low
Patch available YES
Number of vulnerabilities 4
CVSSv2 5.3 (AV:L/AC:L/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C)
3.4 (AV:L/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
3.4 (AV:L/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
1.6 (AV:L/AC:L/Au:N/C:P/I:N/A:N/E:U/RL:OF/RC:C)
CVSSv3 7.5 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
5.1 [CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
6.7 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
2.8 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE ID CVE-2017-11783
CVE-2017-8715
CVE-2017-11818
CVE-2017-11817
CWE ID CWE-264
CWE-200
Exploitation vector Local
Public exploit Not available
Vulnerable software Windows
Windows Server
Vulnerable software versions Windows 8.1
Windows 10
Windows RT 8.1
Windows 7
Windows Server 2012 R2
Windows Server 2016
Windows Server 2012
Windows Server 2008
Windows Server 2008 R2
Vendor URL Microsoft
Advisory type Public

Security Advisory

1) Privilege escalation

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to an error when Windows improperly handles calls to Advanced Local Procedure Call (ALPC). A local attacker can run a specially crafted application and execute arbitrary code with SYSTEM privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11783

2) Security restrictions bypass

Description

The vulnerability allows a local attacker to bypass security restrictions on the target system.

The vulnerability exists due to an error when PowerShell exposes functions and processes user supplied code. A local attacker can inject malicious code into a script that is trusted by the Code Integrity policy and bypass the Code Integrity policy.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8715

3) Security restrictions bypass

Description

The vulnerability allows a local attacker to bypass security restrictions on the target system.

The vulnerability exists in Microsoft Windows storage when it fails to validate an integrity-level check. A local attacker can cause the application with a certain integrity level to execute code at a different integrity level.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11818

4) Information disclosure

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists due to an error when the Windows kernel improperly initializes objects in memory. A local attacker can run a specially crafted application and gain access to potentially sensitive information.

Successful exploitation of the vulnerability may result in further attacks.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11817

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