#VU97660 Link following in Windows Server and Windows - CVE-2019-1069

Vulnerability identifier: #VU97660

Vulnerability risk: High

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2019-1069

CWE-ID: CWE-59

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Windows Server
Operating systems & Components / Operating system
Windows
Operating systems & Components / Operating system

Vendor: Microsoft

Description

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

The vulnerability exists due to incorrect validation of links in Task Scheduler Service. A local user can create a link to a critical file and escalate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2019 10.0.17763.557

Windows: before 10 1703, 10 1803, 10 1809, 10 1903, 10 1703, 10 1703, 10 1703, 10 1703

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External links
https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2019-1069
https://www.kb.cert.org/vuls/id/119704

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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.