#VU82353 Out-of-bounds write in vCenter Server - CVE-2023-34048
Published: October 25, 2023 / Updated: September 4, 2024
Vulnerability identifier: #VU82353
Vulnerability risk: Critical
CVSSv4.0: 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
CVE-ID: CVE-2023-34048
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
vCenter Server
vCenter Server
Software vendor:
VMware, Inc
VMware, Inc
Description
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.
Remediation
Install updates from vendor's website.
External links
- https://www.vmware.com/security/advisories/VMSA-2023-0023.html
- https://www.zerodayinitiative.com/advisories/ZDI-23-1590/
- https://blog.sonicwall.com/en-us/2023/12/vmware-vcenter-dcerpc-dealloc-pointer-manipulation/
- https://www.mandiant.com/resources/blog/chinese-vmware-exploitation-since-2021
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/23677