SB2023102504 - Multiple vulnerabilities in VMware vCenter Server

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Main Vulnerability Database SB2023102504

SB2023102504 - Multiple vulnerabilities in VMware vCenter Server

Published: October 25, 2023 Updated: September 4, 2024

Security Bulletin ID SB2023102504
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Out-of-bounds write (CVE-ID: CVE-2023-34048)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error within the DCERPC protocol implementation. A remote non-authenticated attacker can send a specially crafted RPC request to the vCenter Server, trigger an out-of-bounds write and execute arbitrary code on the target system.

Note, the vulnerability is being actively exploited in the wild since late 2021.


2) Improper access control (CVE-ID: CVE-2023-34056)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to gain unauthorized access to sensitive information.

The vulnerability exists due to improper access restrictions. A remote user can bypass implemented security restrictions and gain unauthorized access to sensitive information.


Remediation

Install update from vendor's website.

References