Zero-day vulnerability in Windows

Memory corruption
CVE-2019-0797

Kaspersky Lab has detected and reported a zero-day vulnerability in Win32k.sys driver in Microsoft Windows.

Vulnerability details

Advisory: SB2019031204 - Privilege escalation in Microsoft Windows Win32k.sys driver

Vulnerable component: Windows

CVE-ID: CVE-2019-0797

CVSSv3 score: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description:

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

The vulnerability exists due to a boundary error within the Win32k.sys driver. A local user can execute a specially crafted application, trigger memory corruption and execute arbitrary code on the target system with elevated privileges.

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