The vulnerability was used since late 2021 by a Chinese threat actor UNC3886.
VIRTUALPITA, VIRTUALPIE
Vulnerability details
Advisory: SB2023102504 - Multiple vulnerabilities in VMware vCenter Server
Vulnerable component: vCenter Server
CVE-ID: CVE-2023-34048
CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C
CWE-ID: CWE-787 - Out-of-bounds write
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.