CVE-2022-31705 is a heap out-of-bounds write vulnerability affecting VMware ESXi, Workstation, and Fusion. This flaw arises within the USB 2.0 controller (EHCI), allowing a malicious actor with local administrative privileges on a virtual machine to potentially execute arbitrary code as the VMX process on the host. The implications of this vulnerability vary between products; while exploitation on ESXi is confined to the VMX sandbox, it may lead to code execution on the host machine for Workstation and Fusion.
With a CVSS score of 8.2, this vulnerability is classified as high severity, indicating a significant risk to organizations utilizing these VMware products. The nature of the vulnerability necessitates immediate attention, as attackers may leverage it to gain unauthorized access and execute malicious code, severely impacting confidentiality, integrity, and availability.
Organizations must prioritize patching this vulnerability as soon as possible to mitigate the risk of exploitation. VMware has provided updates to address this issue, and it is crucial for organizations to apply these updates promptly.
The urgency for remediation is critical, as the potential for code execution could lead to widespread issues for organizations that rely on these virtualization technologies. Administrators should evaluate their environments to confirm that they are running versions of VMware that are not affected by this vulnerability.
Vulnerability Details
The vulnerability allows a local attacker to exploit the heap out-of-bounds write issue in the USB 2.0 controller. The affected products include VMware ESXi versions 7.0 and 8.0, along with VMware Workstation versions from 12.0.0 to below 12.2.5, and VMware Fusion in similar version ranges.
The CVSS score of 8.2 reflects the high severity of this vulnerability, characterized by low attack complexity and the need for high privileges to exploit. The potential impacts on confidentiality, integrity, and availability are rated as high, further emphasizing the risk to organizations.
This vulnerability was publicly disclosed on December 14, 2022, and is classified under CWE-787, which pertains to out-of-bounds write vulnerabilities.
Technical Analysis
The root cause of this vulnerability stems from improper handling of memory within the USB 2.0 controller. Attackers with local administrative privileges can exploit this flaw to write outside the allocated heap buffer, potentially leading to arbitrary code execution.
The attack vector is local, requiring the attacker to have access to the virtual machine. The complexity of the attack is low, as it does not necessitate user interaction and only requires high privileges. Once exploited, confidentiality, integrity, and availability impacts are significant, with the possibility of executing arbitrary code in the VMX process.
Risk & Impact Analysis
The real-world risk associated with CVE-2022-31705 is considerable, particularly for organizations leveraging VMware products in sensitive environments. The potential for unauthorized code execution poses a significant threat, leading to data breaches, system compromise, and service disruption.
The urgency for organizations to address this vulnerability is classified as high. Given the CVSS score of 8.2, immediate patching is recommended to prevent exploitation. The vulnerability is not currently listed in the Known Exploited Vulnerabilities (KEV) catalog, but its high exploitability indicates that organizations must remain vigilant.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following VMware products are affected by this vulnerability:
VMware ESXi versions 7.0 (all updates) and 8.0, VMware Workstation versions 16.0.0 to below 16.2.5, and VMware Fusion versions 12.0.0 to below 12.2.5 are vulnerable.
Mitigation & Remediation
Organizations should update to the latest versions of the affected VMware products to mitigate this vulnerability. Specifically, VMware recommends upgrading to versions that have addressed this issue. For those unable to immediately apply patches, implementing strict access controls and monitoring for unusual behavior can serve as interim measures.
For detailed guidance on securing VMware environments, organizations can refer to the recommended practices outlined in the relevant documentation.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor logs for unusual access patterns, especially from users with local administrative privileges. Behavioral anomalies within the virtual machine environment should also be tracked.
AppSecure Threat Intelligence Insight
The existence of a public proof of concept on GitHub indicates that the vulnerability is of interest to security researchers and attackers alike. Organizations should remain vigilant and implement comprehensive security measures to protect their environments.
For further insights into vulnerability management, organizations can explore our resources on vulnerability management programs and consider implementing regular penetration testing to identify and remediate security weaknesses proactively.
In conclusion, while CVE-2022-31705 represents a significant vulnerability, vigilance and timely remediation can mitigate the associated risks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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