Show vulnerabilities with patch / with exploit

Privilege escalation in Microsoft Windows Win32k component



Published: 2019-07-09 | Updated: 2019-07-10
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-1132
CWE ID CWE-476
Exploitation vector Local
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Subscribe
Windows Server
Operating systems & Components / Operating system

Windows
Operating systems & Components / Operating system

Vendor Microsoft

Security Advisory

UPDATED: 10.07.2019

Updated description and changed CWE-ID based on data provided by ESET.

1) NULL pointer dereference

Severity: Medium

CVSSv3: 7.5 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1132

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: Yes [Search exploit]

Description

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

The vulnerability exists due to a NULL pointer dereference  error when processing objects in memory within the Win32k component. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.

Note, this vulnerability is being actively exploited in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows Server: 2008, 2008 R2

Windows: 7

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1132
https://www.welivesecurity.com/2019/07/10/windows-zero-day-cve-2019-1132-exploit/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.