Multiple vulnerabilities in Microsoft DHCP Server Service

Published: 2023-12-12

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-35643 CVE-2023-35638
CWE-ID	CWE-200 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Windows Server Operating systems & Components / Operating system
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU84116

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-35643

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in DHCP Server Service. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2012 - 2022 23H2

CPE2.3

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35643

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU84117