Remote code execution in Microsoft Windows iSCSI Discovery Service

1) Input validation error

EUVDB-ID: #VU72209

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-21803

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system

The vulnerability exists due to insufficient validation of user-supplied input within the Windows iSCSI Discovery Service. A remote attacker can send a specially crafted malicious DHCP discovery request to the iSCSI Discovery Services and execute arbitrary code on the system.

Note, only x86 or 32-bit based versions of Windows are affected by this vulnerability.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 - 10 1809

Windows Server: 2008 - 2008 SP2

External links

http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21803

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.