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The Apache CloudStack project is pleased to announce the release of CloudStack The CloudStack release is a maintenance release as part of its 4.17.x LTS branch and contains more than 150 fixes and improvements since the CloudStack release.

Rohit Yadav
Screenshot 2022-07-18 at 15.33.00.png

Apache CloudStack version 4.5.0 and later has a SAML 2.0 authentication Service Provider plugin which is found to be vulnerable to XML external entity (XXE) injection. This plugin is not enabled by default and the attacker would require that this plugin be enabled to exploit the vulnerability. When the SAML 2.0 plugin is enabled in affected versions of Apache CloudStack could potentially allow the exploitation of XXE vulnerabilities. The SAML 2.0 messages constructed during the authentication flow in Apache CloudStack are XML-based and the XML data is parsed by various standard libraries that are now understood to be vulnerable to XXE injection attacks such as arbitrary file reading, possible denial of service, server-side request forgery (SSRF) on the CloudStack management server.

On 14th June 2022, a new issue affecting only KVM users using Shared Mount Point storage was reported [1]. This issue affects the creation and the usage of existing Shared Mount Point storage pools on Apache CloudStack

Apache CloudStack added support for the StorPool storage based on Shared Mount Point. However, the current version of CloudStack doesn't allow multiple implementations of Shared Mount Point storage pool providers, causing the StorPool provider to override the default implementation. This affected the other storage pool providers for Shared Mount Point since CloudStack tries to add them as a StorPool storage pool.

To mitigate the issue, a CloudStack administrator needs to do the following on version

  • On each management server: stop the CloudStack management service, remove the Storpool plugin jar on /usr/share/cloudstack-management/lib/cloud-plugin-storage-volume-storpool- and restart the Cloudstack management service
  • On each KVM host: stop the CloudStack agent service, remove the StorPool plugin jar on /usr/share/cloudstack-agent/lib/cloud-plugin-storage-volume-storpool- and restart the CloudStack agent service

Note: This workaround removes the StorPool plugin support. StorPool users should not apply the workaround to continue using their Storpool storage.

This issue will be fixed in the upcoming CloudStack version


Apache CloudStack 4.17 is the latest release of the cloud management platform from the Apache Software Foundation and is a result of months of work from the development community. Apache CloudStack 4.17 is an LTS (Long Term Support) release so will be maintained for a period of 18 months after release.

Ivet Petrova
Screenshot 2022-05-26 at 15.49.12.png

For the 10th consecutive year, the Apache CloudStack community is organising its major event - CloudStack Collaboration Conference, running from 14th to 16th November 2022. The event will be a hybrid event, giving attendees and speakers the option to join in Sofia, Bulgaria (Exact location TBD) or remotely from their computers. By doing so, the conference will allow more people from the Apache CloudStack community and people interested in the technology, to learn more about it and its latest capabilities and integrations.