VMware Patches Critical USB Flaws in ESXi, Workstation, Fusion

Broadcom-owned VMware has recently taken a major stride in reinforcing the cybersecurity landscape of its virtualization products. The focal point of this initiative was the remediation of a set of alarming security vulnerabilities discovered in several of its offerings, namely ESXi, Workstation, and Fusion. The most critical among these were two use-after-free flaws found within the XHCI USB controller. Flagged as CVE-2022-22952 and CVE-2022-22953, these bugs were identified by the respective security outfits Ant Group Light-Year Security Lab and QiAnXin, as well as independent researchers VictorV and Wei. The ramifications of exploiting these vulnerabilities are significant, given that they could allow a local administrative user to execute code on the host with sizable CVSS scores of 9.3 and 8.5 respectively, presenting a severe security risk.

The urgency of addressing these vulnerabilities is underscored by the scope and capabilities of the impacted VMware products. ESXi stands as a foundation for enterprise-level server virtualization; Workstation allows developers and IT professionals to create and test software on local machines; and Fusion offers similar functionality for macOS systems. A compromise in these systems through the detected flaws could potentially lead to a breakdown in system integrity and a subsequent breach of sensitive data or the undermining of operations. VMware’s prompt response in issuing the respective patches reflects the critical nature of these vulnerabilities and its commitment to customer security.

VMware’s Proactive Measures

In the face of critical vulnerabilities, VMware demonstrated swift action by issuing patches for these issues, including for products no longer supported. Notably, fixes were released for CVE-2022-22954, a significant out-of-bounds write flaw, and CVE-2022-22955, which exposed an information leak in the vmx process.

Understanding the gravity of the situation, VMware also suggested temporary measures such as removing USB controllers from VMs to block potential attacks. Although this workaround would mean the loss of USB functionality, critical input devices would remain unaffected. This recommendation underscores VMware’s commitment to swift and effective security responses, ensuring their systems remain secure until permanent fixes can be applied.

VMware’s recent actions underscore the need for constant vigilance and prompt update deployment in cybersecurity, highlighting the proactive and adaptive approach required by tech entities in today’s landscape of sophisticated cyber threats.

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