Advisory Details

November 6th, 2023

VMware vCenter Server Appliance DCE/RPC Protocol Out-Of-Bounds Write Remote Code Execution Vulnerability

CVE ID	CVE-2023-34048
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	VMware
AFFECTED PRODUCTS	vCenter Server Appliance
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of VMware vCenter Server Appliance. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of DCE/RPC protocol. The issue results from the lack of proper validation of user-supplied data, which can result in a write before the start of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of root.
ADDITIONAL DETAILS	VMware has issued an update to correct this vulnerability. More details can be found at: https://www.vmware.com/security/advisories/VMSA-2023-0023.html
DISCLOSURE TIMELINE	2023-08-16 - Vulnerability reported to vendor 2023-11-06 - Coordinated public release of advisory
CREDIT	Grigory Dorodnov of Trend Micro Security Research

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