Vulnerability identifier: #VU15852

Vulnerability risk: Medium

CVSSv3.1: 7.9 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-8476

CWE-ID: CWE-119

Exploitation vector: Local network

Exploit availability: Yes

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

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within Windows Deployment Services TFTP Server. A remote attacker can send a specially crafted request to the TFTP server, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2008 - 2019 1803

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8476

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.