Out-of-bounds write in vCenter Server - CVE-2023-34048
Published: October 25, 2023 / Updated: September 4, 2024
Vulnerability identifier: #VU82353
CSH Severity: Critical
CVSS v4.0: 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
Vendor: VMware, Inc
Affected software:
vCenter Server
vCenter Server
Detailed vulnerability 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.
How to mitigate CVE-2023-34048
Install updates from vendor's website.
Sources
- 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