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CVE-2023-30612

4.0 · MEDIUM

Cloud hypervisor is a Virtual Machine Monitor for Cloud workloads.

Published Apr 19, 2023CWE-306EPSS 0.36%

Overview

CVE-2023-30612 is a medium-severity vulnerability. It was published on April 19, 2023 and has a CVSS 3.1 base score of 4.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.0, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Cloud hypervisor is a Virtual Machine Monitor for Cloud workloads. This vulnerability allows users to close arbitrary open file descriptors in the Cloud Hypervisor process via sending malicious HTTP request through the HTTP API socket. As a result, the Cloud Hypervisor process can be easily crashed, causing Deny-of-Service (DoS). This can also be a potential Use-After-Free (UAF) vulnerability. Users require to have the write access to the API socket file to trigger this vulnerability. Impacted versions of Cloud Hypervisor include upstream main branch, v31.0, and v30.0. The vulnerability was initially detected by our `http_api_fuzzer` via oss-fuzz. This issue has been addressed in versions 30.1 and 31.1. Users unable to upgrade may mitigate this issue by ensuring the write access to the API socket file is granted to trusted users only.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/cloud-hypervisor/cloud-hypervisor/pull/5350GitHubgithub.com/cloud-hypervisor/cloud-hypervisor/pull/5373GitHubgithub.com/cloud-hypervisor/cloud-hypervisor/security/advisories/GHSA-g6mw-f26h-4jgpRefoss-fuzz.com/testcase-detail/5260873569796096Refoss-fuzz.com/testcase-detail/5426283514560512GitHubgithub.com/cloud-hypervisor/cloud-hypervisor/pull/5350GitHubgithub.com/cloud-hypervisor/cloud-hypervisor/pull/5373GitHubgithub.com/cloud-hypervisor/cloud-hypervisor/security/advisories/GHSA-g6mw-f26h-4jgpRefoss-fuzz.com/testcase-detail/5260873569796096Refoss-fuzz.com/testcase-detail/5426283514560512

How CyberStrike helps

Frequently asked questions

What is CVE-2023-30612?

CVE-2023-30612 is a medium-severity vulnerability. It was published on April 19, 2023 and has a CVSS 3.1 base score of 4.0 (MEDIUM).

How severe is CVE-2023-30612?

This vulnerability has a CVSS 3.1 base score of 4.0, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-30612?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-30612?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-30612 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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