CVE-2023-30612: Malicious HTTP requests could close arbitrary opening file descriptors in cloud-hypervisor
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 httpapifuzzer 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.
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Frequently Asked Questions
What is the severity of CVE-2023-30612?
CVE-2023-30612 is classified as a high-severity vulnerability due to its potential to allow unauthorized manipulation of file descriptors.
How do I fix CVE-2023-30612?
To mitigate CVE-2023-30612, users should upgrade to the latest patched version of Cloud Hypervisor, ensuring all security updates are applied.
What systems are affected by CVE-2023-30612?
CVE-2023-30612 affects Cloud Hypervisor versions 30.0 and 31.1.
What is the impact of CVE-2023-30612?
CVE-2023-30612 allows attackers to close arbitrary open file descriptors in the Cloud Hypervisor process through malicious HTTP requests.
Is CVE-2023-30612 a common vulnerability?
CVE-2023-30612 is a specific vulnerability affecting Cloud Hypervisor, and its exploitation requires targeted attacks on the HTTP API socket.