SB2019100904 - Privilege escalation in Win32k.sys driver in Microsoft Windows

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Main Vulnerability Database SB2019100904

SB2019100904 - Privilege escalation in Win32k.sys driver in Microsoft Windows

Published: October 9, 2019

Security Bulletin ID SB2019100904
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2019-1364)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing objects in memory within the Windows kernel-mode driver win32k.sys. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.


2) Buffer overflow (CVE-ID: CVE-2019-1362)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing objects in memory within the Windows kernel-mode driver win32k.sys. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.


Remediation

Install update from vendor's website.

References