Privilege escalation in Microsoft splwow64



Published: 2019-11-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-1380
CWE ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Windows Server
Operating systems & Components / Operating system

Windows
Operating systems & Components / Operating system

Vendor Microsoft

Security Advisory

This security advisory describes one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

Risk: Low

CVSSv3: 6.8 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1380

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to the way the splwow64.exe handles certain calls. A local user can elevate privileges on an affected system from low-integrity to medium-integrity.

Note: This vulnerability by itself does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2012, 2012 R2, 2016, 2019, 2019 1803, 2019 1903

Windows: 8.1, 10, 10 1607, 10 1709, 10 1803, 10 1809, 10 1903, RT 8.1

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1380

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.