#VU21674 Windows Hard Link in Windows and Windows Server


Published: 2019-10-09 | Updated: 2019-10-09

Vulnerability identifier: #VU21674

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1317

CWE-ID: CWE-65

Exploitation vector: Local

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows a local user to cause a denial of service (DoS) condition on the target  system.

The vulnerability exists due to Windows improperly handles hard links. A local authenticated user can run a specially crafted application and cause a target system to stop responding. This vulnerability would allow an attacker to overwrite system files.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1607 10.0.14393.10, 10 1703 10.0.15063.138, 10 1709 10.0.16299.19, 10 1803 10.0.17134.48, 10 1809 10.0.17763.1, 10 1903 10.0.18362.116

Windows Server: 2016 10.0.14393.10 - 2019 1903

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1317

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.


Latest bulletins with this vulnerability


Multiple denial of service vulnerabilities in Microsoft Windows