Denial of Service Vulnerability in OpenStack Nova by OpenStack

CVE-2017-17051

What is CVE-2017-17051?

An issue in OpenStack Nova's default FilterScheduler allows an authenticated user to misuse resources on a hypervisor host. By repeatedly rebuilding instances with new images, an attacker can cause untracked resource consumption, leading to a denial of service scenario, as the process can unintentionally allocate double the required resources. This issue arises particularly in deployments using Nova stable/pike or later that have previously implemented a fix in response to OSSA-2017-005, highlighting a regression in resource management.

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