Two privilege escalation vulnerabilities in Microsoft GDI

Published: 2017-04-12

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-0156 CVE-2017-0155
CWE-ID	CWE-20
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Privilege escalation

EUVDB-ID: #VU6288

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-0156

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to escalate his privileges.

The vulnerability exists due to an error within Microsoft Graphics Component (GDI) implementation when handling objects in memory. A local user can execute arbitrary code on the target system with SYSTEM privileges.

Successful exploitation of the vulnerability may allow a local attacker to compromise vulnerable system.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

Windows: 7 - 10

Windows Server: 2008 - 2016

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0156

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?

No. We are not aware of malware exploiting this vulnerability.

2) Privilege escalation

EUVDB-ID: #VU6289