Privilege escalation in Microsoft Windows Hard Link



Published: 2020-08-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1467
CWE-ID CWE-65
Exploitation vector Local
Public exploit N/A
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 low risk vulnerability.

1) Windows Hard Link

EUVDB-ID: #VU45611

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1467

CWE-ID: CWE-65 - Windows hard link

Exploit availability: No

Description

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

The vulnerability exists due to Windows improperly handles hard links. A local authenticated user can run a specially crafted application and overwrite a targeted file leading to an elevated status.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7 - 10 2004

Windows Server: 2008 - 2019 2004


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1467

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.



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