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https://issues.apache.org/jira/browse/CLOUDSTACK-1327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13670863#comment-13670863
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Alena Prokharchyk commented on CLOUDSTACK-1327:
-----------------------------------------------

The max template size that can be downloaded by the regular user, is limited 
via "max.template.iso.size" global config parameter ("The maximum size for a 
downloaded template or ISO (in GB)"). Default value is 50GB.

                
> Cloudstack allows users to import huge templates from unauthorised URLs
> -----------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-1327
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1327
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Management Server, Template
>    Affects Versions: 4.0.1
>         Environment: Centos 6 x86_64 kvm hypervisors
>            Reporter: Nux
>            Priority: Critical
>
> Because Cloudstack deploys instances as r/w snapshots of the template, 
> importing a template with, say 1 TB diskspace will give you 1 TB instances... 
> this will lead to service abuse.
> Currently Cloudstack allows regular users to install templates from not 
> allowed URLs.

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