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Patch Issued for Critical VMware vCenter Flaw Allowing Remote Code Execution

Vulnerabilities mentionedAll →

CVEVulnerabilityCVSSEPSSFlagsAffectedExposurePublished
CVE-2024-37079
Out-of-bounds Write in Broadcom VMware vCenter Server DCERPC Enables RCE

CVE-2024-37079 is an out-of-bounds write (CWE-787) in the implementation of the DCERPC protocol in VMware vCenter Server, Broadcom's management platform for vSphere virtualization environments. A malicious actor with network access to a vulnerable vCenter Server can trigger the flaw by sending specially crafted network packets, corrupting memory and potentially achieving remote code execution on the server. Successful exploitation would give an attacker control of a central management component, typically a strong foothold for lateral movement across the virtualized estate, though ransomware use is currently listed as unknown. Any organization running affected vCenter Server builds is exposed, with risk highest where the management interface is reachable from untrusted networks or the internet. CISA added the flaw to the Known Exploited Vulnerabilities catalog on 2026-01-23, confirming exploitation in the wild; no public PoC is known, CVSS was not yet scored in the source data, and the high EPSS score (22.4%, 98th percentile) signals elevated near-term exploitation risk.

Do: Upgrade vCenter Server to a patched release per Broadcom's 2024 advisory (VMSA-2024-0012) without delay, since exploitation is confirmed in the wild and CISA BOD 22-01 requires federal agencies to apply vendor mitigations or discontinue use per the KEV deadline. Inventory your vCenter builds and compare them against the advisory's affected ranges; installations already patched for the 2024 DCERPC fixes are protected. Until patching completes, restrict network access to vCenter management interfaces (firewall allowlisting or VPN) and prioritize any internet-exposed instances.

9.822% KEV
  • Broadcom VMware vCenter Server
large≈tens of thousands of internet-exposed vCenter instances, with total deployments plausibly in the hundreds of thousands
CVE-2024-37080
vCenter Server contains a heap-overflow vulnerability in the implementation of the DCERPC protocol.

vCenter Server contains a heap-overflow vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger this vulnerability by sending a specially crafted network packet potentially leading to remote code execution.

NVD description · AI analysis pending
9.812%
  • vmware vcenter server
CVE-2024-38812
+1 in the same advisory: …38813
Unauthenticated RCE in VMware vCenter Server via DCERPC heap overflow

VMware vCenter Server contains a heap-based buffer overflow (CWE-122/CWE-787) in its implementation of the DCERPC protocol. A remote attacker with network access to vCenter Server can trigger the flaw by sending a specially crafted network packet; no credentials, privileges, or user interaction are required (CVSS:3.1/AV:N/AC:L/PR:N/UI:N). Successful exploitation can lead to remote code execution with high impact on confidentiality, integrity, and availability of the vCenter host. Affected products are VMware vCenter Server and VMware Cloud Foundation deployments, with the exact vulnerable version ranges specified in the Broadcom/VMware advisory. The flaw is confirmed to be exploited in the wild: CISA added it to the KEV catalog on 2024-11-20, EPSS estimates a 54.6% probability of exploitation within 30 days (99th percentile), and related reporting describes PRC hackers using the BRICKSTORM backdoor in campaigns involving actively exploited VMware vCenter flaws; no public proof-of-concept is known.

Do: Apply the patched vCenter Server / VMware Cloud Foundation releases issued by Broadcom per the vendor advisory, and because reporting indicates the fix was re-issued, verify the latest patched build is actually installed rather than an earlier, possibly incomplete one. Prioritize patching internet-facing vCenter instances and restrict network access to the vCenter management interface in the interim. Per the CISA KEV required action, apply vendor mitigations or discontinue use if mitigations are unavailable, and hunt for signs of post-exploitation (e.g., BRICKSTORM activity) given confirmed in-the-wild exploitation.

9.855% KEV
  • VMware (Broadcom) vCenter Server affected versions per the VMware/Broadcom advisory (not enumerated in the provided data)
  • VMware (Broadcom) VMware Cloud Foundation affected versions per the VMware/Broadcom advisory (not enumerated in the provided data)
largeseveral thousand internet-exposed vCenter instances per public scans; on the order of 100,000+ total vCenter deployments worldwide (estimate)
Full article391 words · extracted from thehackernews.com · click to collapse

Ravie LakshmananSep 18, 2024Virtualization / Network Security

Broadcom on Tuesday released updates to address a critical security flaw impacting VMware vCenter Server that could pave the way for remote code execution.

The vulnerability, tracked as CVE-2024-38812 (CVSS score: 9.8), has been described as a heap-overflow vulnerability in the DCE/RPC protocol.

"A malicious actor with network access to vCenter Server may trigger this vulnerability by sending a specially crafted network packet potentially leading to remote code execution," the virtualization services provider said in a bulletin.

The shortcoming is similar to two other remote code execution flaws, CVE-2024-37079 and CVE-2024-37080 (CVSS scores: 9.8), that VMware resolved in vCenter Server in June 2024.

Also addressed by VMware is a privilege escalation flaw in the vCenter Server (CVE-2024-38813, CVSS score: 7.5) that could enable a malicious actor with network access to the instance to escalate privileges to root by sending a specially crafted network packet.

Security researchers zbl and srs of team TZL have been credited with discovering and reporting the two flaws during the Matrix Cup cybersecurity competition held in China back in June 2024. They have been fixed in the below versions -

  • vCenter Server 8.0 (Fixed in 8.0 U3b)
  • vCenter Server 7.0 (Fixed in 7.0 U3s)
  • VMware Cloud Foundation 5.x (Fixed in 8.0 U3b as an asynchronous patch)
  • VMware Cloud Foundation 4.x (Fixed in 7.0 U3s as an asynchronous patch)

Broadcom said it's not aware of malicious exploitation of the two vulnerabilities, but has urged customers to update their installations to the latest versions to safeguard against potential threats.

"These vulnerabilities are memory management and corruption issues which can be used against VMware vCenter services, potentially allowing remote code execution," the company said.

The development comes as the U.S. Cybersecurity and Infrastructure Security Agency (CISA) and the Federal Bureau of Investigation (FBI) released a joint advisory urging organizations to work towards eliminating cross-site scripting (XSS) flaws that threat actors could exploit to breach systems.

"Cross-site scripting vulnerabilities arise when manufacturers fail to properly validate, sanitize, or escape inputs," the government bodies said. "These failures allow threat actors to inject malicious scripts into web applications, exploiting them to manipulate, steal, or misuse data across different contexts."

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Text extracted automatically; images, tables and formatting may be missing. Original: https://thehackernews.com/2024/09/patch-issued-for-critical-vmware.html