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

2023-11-0600:00:00

Grigory Dorodnov of Trend Micro Security Research

www.zerodayinitiative.com

vmware vcenter server

dce/rpc protocol

out-of-bounds write

remote code execution

vulnerability

user-supplied data

root context

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.7 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.031 Low

EPSS

Percentile

90.9%

JSON

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.