Two vulnerabilities in Win32k.sys driver in Microsoft Windows

Published: 2017-08-08 20:26:05
Severity Low
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2017-8593
CVE-2017-8666
CVSSv3 7.7 [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]
2.9 [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]
CWE ID CWE-119
Exploitation vector Local
Public exploit Not available
Vulnerable software Windows
Windows Server
Vulnerable software versions Windows 8.1
Windows 7
Windows 10
Windows RT 8.1
Windows Server 2012
Windows Server 2012 R2
Windows Server 2008
Windows Server 2008 R2
Windows Server 2016
Vendor URL Microsoft

Security Advisory

1) Memory corruption

Description

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to boundary error in Win32k.sys driver. A local user can execute arbitrary code on vulnerable system with elevated privileges.


Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8593

2) Memory corruption

Description

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

The vulnerability exists due to a boundary error when handling objects in memory in Win32k.sys driver. A local user can gain access to potentially sensitive information.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8666

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