CVE-2020-1054

Known Exploited Vulnerability

Microsoft Win32k Privilege Escalation Vulnerability

Vendor / product: Microsoft / Win32k

Description

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.

Weakness classification

• nvd@nist.gov: CWE-787
• 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-787

Primary references

• secure@microsoft.com — Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory, VDB Entry
• af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
• 134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource