CVE-2023-34048 on CISA KEV

vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.

01What CISA says about this vulnerability

vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.

02Required action — verbatim from CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

03Notes & references

• www.vmware.com — https://www.vmware.com/security/advisories/VMSA-2023-0023.html

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
VMware	VMware vCenter Server	8.0, 7.0
VMware	VMware Cloud Foundation (VMware vCenter Server)	5.x, 4.x

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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