CVE-2023-34048: VMware vCenter Server Out-of-Bounds Write Vulnerability

CVE-2023-34048 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2024-01-22

VMware vCenter Server contains an out-of-bounds write vulnerability in its implementation of the DCERPC protocol. A remote attacker with network access can exploit this flaw to achieve remote code execution.

Technologies: Broadcom vCenter Server, VMware Cloud Foundation. Vendors: Broadcom, VMware.

Quick answers

Is CVE-2023-34048 exploited in the wild?
Yes. CVE-2023-34048 is known to be exploited in the wild, first recorded on 22 January 2024. Treat it as urgent.
How severe is CVE-2023-34048?
Critical severity, with a CVSS score of 9.8, published 22 January 2024.
Which products and versions are affected?
VMware vCenter Server 4.0 through 5.5, 7.0, 8.0.
Is there a fix for CVE-2023-34048?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2023-34048 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2023-34048?
Check whether you run Broadcom vCenter Server or VMware Cloud Foundation. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • VMware vCenter Server 4.0 through 5.5, 7.0, 8.0

Timeline

  • 2023-10-25: disclosed: NVD Published Date
  • 2024-01-22: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2024-01-22: exploited: Reported as exploited in the wild

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