Privilege escalation in Microsoft splwow64



Published: 2019-07-09
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-0880
CWE-ID CWE-264
Exploitation vector Local
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU19061

Risk: Medium

CVSSv3.1: 6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-0880

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

Exploit availability: No

Description

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

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

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 8.1 - 10 1903

Windows Server: 2012 - 2019 1903

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0880


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.



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