VMware ESXi contains an out-of-bounds read vulnerability. A malicious actor with local administrative privileges on a virtual machine with an existing snapshot may trigger an out-of-bounds read leading to a denial-of-service condition of the host. This vulnerability has a CVSS score of 6.8, categorizing it as medium severity.
The potential for an attacker to exploit this vulnerability highlights the importance of maintaining a secure virtual environment. Organizations utilizing VMware ESXi should assess their systems for this vulnerability and prioritize appropriate remediation actions.
The urgency for defenders is moderate as exploitation has not been confirmed publicly. However, the risk to organizations includes possible service interruption and diminished availability if the vulnerability were to be exploited.
Organizations should address this vulnerability in their priority patch cycle.
Vulnerability Details
The official description indicates that the vulnerability involves an out-of-bounds read in VMware ESXi. This can lead to denial-of-service conditions, particularly if exploited by someone with local administrative privileges. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H, reflecting a low attack complexity and no required privileges.
The affected products include versions of VMware ESXi, particularly those in the 7.0 and 8.0 series, as well as VMware Cloud Foundation. The CVE was published on June 25, 2024.
Technical Analysis
The root cause of this vulnerability is an out-of-bounds read, which can occur when a virtual machine attempts to access memory that it is not authorized to read. This vulnerability is categorized under CWE-125, indicating improper handling of buffer boundaries.
The attack vector is local, meaning an attacker must have access to the system, specifically to a virtual machine with administrative privileges. The attack complexity is low, and no user interaction is required to exploit the vulnerability.
In terms of impacts, the confidentiality impact is none, the integrity impact is low, and the availability impact is high. This suggests that while the data may not be directly compromised, the service can become unavailable, leading to significant operational disruption.
Risk & Impact Analysis
Risk to organizations includes service outages and potential disruption of business operations. The blast radius for this vulnerability may vary depending on the size and configuration of the VMware environment.
Given the CVSS score of 6.8, organizations should address this vulnerability in their priority patch cycle. Regular updates and security reviews are essential to ensuring the stability and security of virtual environments.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include VMware ESXi 7.0 and 8.0, specifically updates and releases within these ranges. All versions prior to vendor patch are also at risk.
Mitigation & Remediation
Organizations must ensure they apply the latest patches from VMware to mitigate this vulnerability. Configuration hardening and limiting access to virtual machines can also reduce risk.
For further assistance, consider utilizing penetration testing services to identify and remediate security weaknesses.
Detection Guidance
Monitoring for unusual behavior in virtual environments can help detect potential exploitation attempts. Log indicators and behavioral anomalies should be closely observed.
AppSecure Threat Intelligence Insight
This vulnerability represents an ongoing challenge for organizations using VMware products. Security teams should remain vigilant in monitoring for updates and trends associated with vulnerabilities in virtualization technologies.
For additional resources, consider reviewing the following best practices: penetration testing methodology and vulnerability management program design guides to enhance your security posture.
These insights can help organizations effectively respond to current and future security challenges.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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